“If you hear a lot of loud noises in Galveston tonight, it’s probably part of a military training exercise,” KTRK-TV in Houston reported. “According to the Galveston County Daily News, the Army is using the old jail on 17th Street for a night drill in urban warfare.”

Around 80 soldiers from the U.S. Army Special Operations Command in coordination with local law enforcement violated Posse Comitatus on Wednesday night, the Houston Chronicle reported.

“We were invited by the city of Galveston to conduct joint training exercises to enhance the effectiveness of both services in order to better protect the residents of Galveston,” Sgt. 1st Class Michael Noggle, an Army spokesman based at Fort Bragg, North Carolina, told the newspaper.