Kabul - students turned soldiers
13 of 16 killed in Afghan crash were U.S. troops
3 contractors also died; 2 military personnel missing
The CH-47 Chinook crashed near Ghazni,
80 miles (128 kilometers) southwest of Kabul.
It was returning to Bagram Air Base near the capital.
VISIONS of OSAMA
U.S. chopper crashes in Afghanistan
CH-47 carried about 16 troops, officials say
CNN) -- A U.S. military helicopter
with more than a dozen troops
aboard crashed Tuesday in Afghanistan
during a military transport mission
near the Pakistan border,
military officials said.