Mr. Obama has also ordered that all military commission trials be stayed and that the case of Ali Saleh al-Marri, the only al Qaeda operative now held on U.S. soil, be reviewed.

WSJ: John Yoo: Obama Made a Rash Decision on Gitmo

My colleagues, operative paragraph four of U.N.

CNN: Transcript of Powell's U.N. presentation

That is when CIA operative Mike Spann was killed, the first U.S. combat casualty in Afghanistan.

CNN: Walker: Prison uprising was 'mistake'

While Chapman's is the first American military death from hostile fire, 10 other Americans have died since the campaign began in Afghanistan, including a CIA operative killed in a Taliban prison uprising and three Green Berets killed in an accidental bombing by U.S. planes.

CNN: Killed soldier devoted to family, country, parents say