U.S. Army General Stanley A. McChrystal, commander of International Security Assistance Forces, disembarks a Black Hawk with Company A, 3rd Battalion, 238th Aviation Regiment, Delaware National Guard, Task Force Knighthawk, 3rd Combat Aviation Brigade, Task Force Falcon, to greet Afghan National Army commander during his visit to Korengal outpost as part of Operation Mountain Decent II, April 8. (Photo by U.S. Army Spc. Victor Egorov, 55th Combat CamerKUNAR PROVINCE, Afghanistan â€" U.S. Army General Stanley A. McChrystal, commander of International Security Assistance Forces, exits a Black Hawk with Company A, 3rd Battalion, 238th Aviation Regiment, Delaware National Guard, Task Force Knighthawk, 3rd Combat Aviation Brigade, Task Force Falcon, to greet an Afghan National Army commander during his visit to the Korengal outpost as part of Operation Mountain Decent II, April 8. During Operation Mountain Descent II, more than 500 Soldiers and nearly half a million pounds of equipment were airlifted out of the Korengal valley; this was the large-scale movement of U.S. forces out of the valley.