Federal Power: Homeland Security's procurement officer is grilled in Congress on why federal agents who rarely fire weapons need several times more bullets annually than an Army officer. Who or what are they shooting at? Republican Rep. Jason Chaffetz on Thursday asked Nick Nayak, DHS' chief procurement officer, a question we and others have been asking: Why has the Department of Homeland Security been buying so much ammunition? Dismissed as a concern only of right-wing conspiracy theorists, the reported amounts as high as 2 billion rounds have varied and been explained not as a one-time purchase but a bulk buy...