ARLINGTON, Va. — Authorities are avoiding airdropping provisions into New Orleans — the traditional way of supplying disaster victims — out of fear of sparking riots, a state official said. While the military has used helicopters to drop provisions to some stranded in New Orleans, authorities have not launched the massive supply airdrops seen in Afghanistan at the beginning of Operation Enduring Freedom. Several C-130 Hercules aircraft are stationed at Little Rock Air Force Base, but authorities have not ordered them to drop supplies to flood victims, Arkansas Air National Guard officials said. Airdropping supplies could actually worsen the situation,...