The Bureau monitors drone strike casualties in Pakistan, Yemen and Somalia. In Yemen and Somalia, these figures also include victims of drone strikes, airstrikes, missile attacks and ground operations. Unlike other organisations that track such deaths, the Bureau focuses on identifying non-militant deaths, including children. The data from this research is published online. Jack Serle was one of three Bureau reporters who won the Martha Gellhorn Prize for Journalism in 2013 for "their research into Barack Obama’s drone wars and their consequences for civilians".