BAGHDAD (Reuters) - The U.S. military has found the body of the pilot of one of two Marine Corps jets that crashed in Iraq and believes the warplanes may have collided in mid-air, U.S. officials said on Tuesday. The U.S. military lost contact with the two Marine Corps F/A-18 Hornet aircraft in Iraq on Monday night, a military statement said. The planes were flying from the aircraft carrier USS Carl Vinson, the military said. In Washington, defense officials said they suspected the two fighters collided in mid-air at 30,000 feet, but no final conclusion had been reached. One official, who...