Walker, 20, who was captured last month at a fortress holding Taliban prisoners near Mazar-e Sharif in northern Afghanistan, was questioned at a U.S. Marine Corps base near Kandahar, where he is being held.
U.S. forces flew about 100 attack missions into Afghanistan on Monday, most of them aimed at supporting Northern Alliance forces around Mazar-e Sharif and north of Kabul, said Marine Corps Gen.
The Germans have sent a cargo aircraft to a Turkish airbase on standby for use in Afghanistan and the French have sent special forces to Uzbekistan ready to secure an airfield near Mazar-e Sharif.