Thank you, Amenda. And good afternoon, everyone. My name is Bob Burrows, Vice President of Investor Relations for Emergent. Thank you for joining us today, as we discuss our fourth quarter and 12 months of 2017 financial and operational results. As is customary, today's call is open to all participants, and in addition, the call is being recorded and is copyrighted by Emergent BioSolutions. Participating on the call with prepared comments will be Dan Abdun-Nabi, President and Chief Executive Officer; and Bob Kramer, the Executive Vice President and Chief Financial Officer. A Q&A session will follow at the conclusion of our prepared comments, and other members of senior management will be available to participate, if need be. Before beginning, I'm compelled to remind everyone that during today's call or either on our prepared comments or the Q&A session, management may make projections and other forward-looking statements related to our business, future events; our prospects for future performance. These forward-looking statements are based on our current intention, beliefs and expectations regarding future events. We cannot guarantee that any forward looking statement will be accurate. Investors should realize that if underlying assumptions proved inaccurate or unknown risks or uncertainties materialize, actual results could differ materially from our expectations. Investors are therefore caution not to place undue reliance on any forward looking statement. Any forward looking statements speaks only as of the day of this press release and this call and except as required by law, we do not undertake to update any forward looking statement to reflect new information, events or circumstances. Investor should consider this cautionary statement as well as risk factors identified in our period reports filed with the Securities and Exchange Commission when evaluating our forward looking statements. During our prepared comments as well as during the Q&A session, we may also refer to certain non-GAAP financial measures that involve adjustments to GAAP figures, in order to provide greater transparency regarding Emergent's operating performance. Please refer to the tables found in today's press release regarding our use of adjusted net income and EBITDA and the reconciliations between our GAAP financial measures and these non-GAAP financial measures. For the benefit of those who may be listening to the replay of the webcast, this call was held and recorded on February 22, 2018. Since then, Emergent may have made announcements related to topics discussed during today's call. You're once again encouraged to refer to our most recent press releases and SEC filings, all of which may be found on the Investors home page of our website. With the introduction, I would now like to turn the call over to Dan Abdun-Nabi, Emergent BioSolutions' President and CEO. Dan?