Thank you, Christian, and good morning, everyone. I'm very pleased with the overall performance of our business in the second quarter. Total revenues of $5.9 billion, which was a new company record, represents 12% growth sequentially. Our operating income grew 43% sequentially, with our North American and international businesses both registering double-digit growth rates. North America continued to experience strong margin growth while our international business saw a modest seasonal recovery from the first quarter. Against prior year, revenue and operating income grew 35% and 52%, respectively, with operating income more than doubling in North America. International revenue surged 9% against the rig count growth of 5%, while operating income declined from prior year level due to the disruptions caused by the turmoil in North Africa and international pricing deterioration. We are now seeing evidence that the international pricing is stabilizing. We believe that steady volume increases should be a precursor for overall international pricing to improve toward the end of the year. We also believe that continued execution of our strategies will lead to margin expansion in both our North America and international businesses and provide us with continued overall strong performance for the remainder of 2011 and beyond. Let me now discuss our operating results in more detail, starting with North America. North America experienced sequential revenue and operating income growth of 16% and 36% in the second quarter compared to a U.S. rig count growth of just 6%. We achieved these results despite weather-related issues in the Bakken and high decrementals we get from the Canadian spring breakup. Sequential incremental operating margin for the quarter was 57%, which is the highest level since the start of the North American recovery in the third quarter of 2009. More importantly, for the first time in many years, incremental margins were consistent between our C&P and D&E divisions, evidence of the continued adoption of our integrated services offerings and that all of our well construction-related PSLs are benefiting from this strong market. Overall, growth in the demand for our services has outpaced capacity additions, and we expect this imbalance to continue going forward. We have always been confident in the strength of this North American cycle even when others have not been, and our results this quarter validate our bullish view of the market. The continued shift to oil and liquids-rich activities has propelled sustained volume growth in our U.S. land business. Even gas drilling, which was down only 2% in the quarter, remained relatively resilient, spurred by the increased demand for power generation due to substitution of natural gas for coal and harsh summer temperatures in various regions. Last year, we discussed the strategy of staying with our dry gas basin customers and not moving equipment elsewhere, and to work with them to find a business model that allowed both of us to achieve our financial goals by driving project efficiencies in the high-quality portions of their gas portfolios. While we did sacrifice some margin opportunities at that time, and some of you were critical of that, I believe the strategy is starting to pay off. Our customers are seeing the returns they need, and we are now seeing only a small difference in operating margin between the gas plays and our liquids-rich shale plays. Despite the success, we remain a bit cautious on natural gas drilling for the rest of the year. We continue to believe, however, that any further curtailment would be outweighed by continued expansion in liquids activity. The changing landscape in North America and the corresponding increase in service intensity are playing to our strengths. Operators are drilling longer laterals that require more complex completions to maximize production. In this regard, we are pleased to announce that we have introduced a great new product for our customers called RapidFrac. We believe RapidFrac is now the best sliding sleeve completion system in the market for horizontal wellbores. RapidFrac technology allows for accurate and efficient stimulation, but most importantly, gives our customers enhanced reservoir contact. RapidFrac is being introduced first in the Bakken with outstanding results. One operator, for instance, experienced a 75% increase in production with a 50% reduction in pumping time compared to an offset well using traditional plug and perforate design. This customer is now looking at switching all of their completion work to using RapidFrac. In addition to this technology, we continue to develop innovations that improve reservoir connectivity to enhance production, and Tim will talk about these in a few minutes. We believe the commercialization of these innovative offerings will continue to enable us to sustain our North America leadership position. Activity in the deepwater Gulf of Mexico is continuing to recover due to the resumption of the issuance of permits that took place earlier this year. Current approved permits are heavily weighted towards larger operators, which have traditionally been our core customers. We experienced strong incrementals in the second quarter and are currently delivering drilling and completion services at a market share level that is higher than our historical Gulf activity, including providing cementing services for 8 of the 18 new well permits. While we are pleased with the Gulf of Mexico improvement in the second quarter, the pace of permit issuance has slowed again and the fact that some of the initially permitted wells are nearing completion creates a risk that the Gulf recovery could slow or stall in the second half of 2011. As a result, we don't expect to generate the same level of incrementals from the Gulf of Mexico in the third quarter. Through 2011, we expect that land activity will remain robust as operators continue to pursue an increase in activity for the liquids portion of their asset portfolios. We believe that we will continue to generate margin expansion, but it will be slowed down by general cost inflation, particularly for labor, chemicals and profits. Now let me talk about our international business for a few minutes. Latin America posted good sequential revenue growth from increased activity across most of the region. But margins were impacted by some unusual costs in Argentina and Colombia. Brazil continues to be a stellar performer in the region with a 21% sequential revenue growth from the first quarter, with improving margins. Due to the rapid growth in our Brazil business over the last several years, we expect Brazil operations should soon surpass Mexico as our largest operation in Latin America. We continue to strengthen our presence in the country and are very pleased with our role in assisting our customers in unlocking the value of their deepwater assets. Mexico had a good quarter, with revenues growing 12% sequentially and there are emerging signs that prospects in the country may be improving. But at this point, it is still too early to say whether this performance will be sustainable. Increased interest from our customer to work on their offshore fields and continuing work on the shale plays in North Mexico are contributing to a more positive view of this market over time. Now let's turn to the Eastern Hemisphere. I am actually quite pleased with where we are in the Eastern Hemisphere. We experienced a modest recovery in our Eastern Hemisphere business as the seasonal rebound from harsh weather conditions in Russia, North Sea and Australia offset disruptions in some markets. We have been growing our Eastern Hemisphere revenue faster than the market and our revenue per rate has increased. We currently have 5 specific areas that are pulling our Eastern Hemisphere margins down. Other than these areas, our margins would be where we would all expect them to be at this point in their recovery. Let me talk about these 5 areas. First is Libya. We are completely shut down in Libya, but we have maintained our local employee base and the related ongoing expenses all subject to applicable law, pending the outcome of the turmoil. Iraq continues to weigh on our near-term results. As we mentioned in the first quarter, our work in Iraq has shifted from workover to new drilling, but rig mobilization delays and our project start-ups have led to significant underabsorption of our fixed costs. We continue to believe that these drilling projects will commence later in the third quarter when we expect to have 7 rigs running compared to 0 today. Currently, we believe that we will return to profitability by the fourth quarter when the performance of these contracts should be in full swing. Even though these contract delays have impacted our short-term results, they have not dampened our enthusiasm for Iraq. We believe that Iraq will be one of the fastest-growing countries internationally in the coming years and that we will benefit significantly as a result of a first-mover strategy. In Sub-Saharan Africa, we have been successful at winning contracts in both east and west Africa in the past several years. In many cases, these contracts have been in countries new to Halliburton such as Uganda, Tanzania and Mozambique, where I've included the introduction of some of our Drilling and Evaluation product lines to some of our existing countries of operation. As you know, it is expensive to set up new drilling, logging or fluid operations. These new deployments are requiring heavy investment in new facilities in mobilization of equipment and people and are negatively impacting our Eastern Hemisphere margins while these mobilizations are being implemented. However, we believe these new areas of work should position us for many years of profitable operations going forward. Our U.K. North Sea operations are suffering from a lack of customer drilling commitment to that market because of U.K. tax reform policies. We have a large fixed cost structure to our operation in the U.K. and business is not currently at a level that will absorb these costs. We are now in the process of redeploying equipment and people to other parts of the Eastern Hemisphere. And finally, Algeria, we continue to have administrative procedures relating to contract renewals and new awards that are unpredictable and have impacted our level of profitability there. While the timing is uncertain, we expect the issues in Algeria to be resolved, allowing this market to recover. As such, we have made cost structure adjustments primarily in our Europe/Africa/CIS region, resulting in employee separation costs that impacted our results by $0.01 in the second quarter. In total, the issues related to these 5 areas had an impact of approximately 400 basis points on our Eastern Hemisphere margins. We are going to stay the course in these markets as I believe the future upside is well worth it despite the current downside pressure it puts on the margins. There have also been numerous discussions in the investment community regarding international pricing. Our pricing strategy has supported our overall objective of gaining share in certain deepwater markets during the downturn. We won contracts in key geographies by deploying fit-for-purpose technologies and leveraging our customers' need to have multiple providers for their projects. Specifically, we are currently mobilizing PSLs for 31 new projects, 18 of which are in our Drilling and Evaluation division. Many of these projects are in Sub-Saharan Africa, as I mentioned earlier. Outside of key deepwater markets, our pricing behavior is consistent with that of our peers and we believe that any suggestion that we have been more aggressive is inaccurate and misleading. For any bid outcome that we could be accused of having an aggressive price, I can give you one from each of our major competitors. So as the cycle enters a new phase, we believe that the contracts we have won will provide us with the opportunity to deploy new technologies and process efficiencies that create value for our customers and incremental margins for us. We see this strategy for deploying new technologies already working. For example, in a recent contract in Norway for drilling fluids, we replaced standard mod with a proprietary water-based system that provides the whole stability our customer was seeking, providing incremental value for the customer and an uplift in margins from single to double digits for us. In the Middle East, fluid sampling and magnetic resonance imaging tools were added to a wireline contract to assist our customer with their formation evaluation challenges. The expanded scope of this contract led to improved production for our customer that provided us with a 25% increase in contract revenues and improving margins. I could mention many more cases like this where we are seeing opportunities to broaden the scope of the services we provide our customers. By introducing these new technologies, we help improve our customers' effectiveness while at the same time favorably impacting revenue and margins. The pricing environment in the international markets has been challenging. However, we are now seeing the emergence of conditions that will enable leading-edge pricing to improve. Continued strong growth in certain geographies like Brazil, Colombia and Norway and volume increases in the Middle East and in deepwater regions are creating an inflection point. We believe this will serve to assist in the tightening of capacity and will lead to improved pricing by the end of the year. How much improvement and how quickly it comes will depend in large part upon commodity price behavior and the pace of the global economic recovery. So in the second half of the year, we expect a gradual progression of our international margins as activity improves. We expect our international margin expansion to continue into 2012 as leading-edge pricing improves and new technologies are introduced. Overall, we believe that what we are seeing in North America, plus the continued international recovery, will lead to even a more favorable earnings picture as we go through 2011 and beyond. The execution of our strategies is providing us with momentum for the second half of the year. By securing key contract wins, deploying new technologies and establishing bases in new frontier markets for Halliburton, we believe we are in a unique position to continue to outperform as the industry enters the next phase of the cycle. I'll let Mark give some more details now.