David Barstow is a senior writer at The New York Times.

In 2009, he was awarded the Pulitzer Prize for Investigative Reporting for "Message Machine," his series about the Pentagon’s secret campaign to influence coverage of the wars in Iraq and Afghanistan by cultivating retired officers who work as military analysts for TV and radio networks. In 2004, he and Lowell Bergman were awarded the Pulitzer Prize for Public Service for articles about employers who committed egregious work place safety violations that killed or injured hundreds of American workers.

Mr. Barstow joined The Times in 1999 as a reporter on the Metro Desk, and he has been a member of the newsroom’s investigative unit since 2002.

Before joining The New York Times, Mr. Barstow worked at The St. Petersburg Times in Florida, where he was a finalist for three Pulitzer Prizes. Before that, he worked at the Rochester Times-Union in upstate New York and the Green Bay Press-Gazette in Wisconsin. Mr. Barstow, a graduate of Northwestern University, grew up in Concord, Mass.

Alejandra Xanic von Bertrab started in Guadalajara as a radio broadcaster and writer with the Siglo 21 newspaper, in the Metro and Regional sections. She later joined the paper’s investigative unit and worked on stories ranging from drug trafficking to state corruption and top political assassinations. She was given the 1992 National Journalism Award for her coverage of the explosions of 8 kilometers of streets in Guadalajara. Von Bertrab reported on social issues such as the plights of the deaf in Mexico and of marginalized residents of small rural villages. She moved to Mexico City 15 years ago and worked for Reforma and Milenio newspapers, Gatopardo, National Geographic, as a freelance journalist. As a reporter in Mexico City she has investigated health and social issues for the Mexican edition of Gabriel García Marquez´s magazine, Cambio, and was an editor at the business biweekly Expansion. In 2010 and 2011, von Bertrab was part of the ICIJ team that investigated big tobacco’s global lobbying strategies. She has developed an expertise in using Mexico’s young Freedom of Information Act and has been an active trainer of fellow reporters around the country.