PEMBROKE PINES, Fla. (March 15) - Carlos G. Rojas didn't know what to think when the military life insurance checks started showing up at his office. He didn't know anyone who would have named him a beneficiary, and the checks totaled $200,000. He called Servicemembers' Group Life Insurance, which pays death benefits to military families, and the customer service representatives insisted the money was his and he should cash the checks, he said. Rojas couldn't do it. "It's not like picking up a penny you just found," said Rojas, a 29-year-old marketing consultant. "Somebody's life was connected with that money."...