Director Gavin Hood on the nature of (and the need for) modern warfare

After reading the screenplay for "Eye in the Sky," a thrilling, minute-by-minute account of a fictional military operation featuring three remote-controlled drones -- a Predator aircraft armed with laser-guided missiles and two tiny surveillance vehicles, one disguised as a hummingbird, the other a beetle -- filmmaker Gavin Hood had a powerful reaction. "Oh, my God," Hood recalls thinking. "Is this stuff real?"