By Elaine Donnelly
Extending sexual misconduct to combat units
Independent voices from the TWT Communities
Coast Guard spokeswoman Casey Ranel said the agency sent out a cutter Sunday morning to collect samples of the substance, which was spotted off the coast of Louisiana.
Ms. Ranel says dredging had been going on not far away at the mouth of the Mississippi River, and it's possible the substance is silt dredged from the bottom.