Defense secretary finds not enough forces in Afghanistan to protect U.S. troops . Plan could send nearly 3,000 troops , source says . Morrell said the proposal may not raise total U.S. troop strength above 68,000 , because some of the units already scheduled to go could be sent not fully staffed or others already there could be sent home . Comment: Troops killed by roadside bombs up more than 400 percent in 2 years .
Defense secretary finds not enough forces in Afghanistan to protect U.S. troops . Plan could send nearly 3,000 troops , source says . Comment: Troops killed by roadside bombs up more than 400 percent in 2 years .