The parking garage at the Galveston County courthouse is already blocked off, in preparation for military training exercises Wednesday, which could include helicopters landing on the roof.
The garage occupies four floors of a seven-story building at 715 19th St., which also houses an empty jail.
The training will involve about 80 soldiers from the U.S. Army Special Operations Command in coordination with local law enforcement, said Sgt. 1st Class Michael Noggle, an Army spokesman based at Fort Bragg, N.C.
No civilians will be involved, he said.
"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," Noggle said by email.
"The purpose of the realistic urban training is to give our Special Operators an opportunity to hone their skills in a controlled, but unfamiliar, realistic urban environment that cannot be replicated with the bare-boned facades found on military installation ranges," he wrote.
Galveston County Judge Mark Henry said he thought the exercise could involve landing helicopters on top of the seven-story garage and jail facility.
An old antenna, which would have impeded landing on the building's roof, was removed last week, Henry said.
"It was scheduled for demolition anyway," the judge said. "We just accelerated the time frame on that. It's out of their way so they can land there if they want to."
Although the former county jail is empty, it's well maintained in case it might be needed for inmate overflow, Henry said.
Noggle declined to specify what the training includes, but he stated that helicopters would be used if weather permits.
Any firing of weapons will involve "simulated ammunition," Noggle said.
If the training is anything like the maneuvers that happened Monday in southeast Houston near the former Carnegie Vanguard High School and last week in Miami, it will catch the public's attention.
On Tuesday, the Houston Police Department issued a statement that included an apology for its lack of prior warning about the exercises.
"In terms of the training, HPD is assisting the U.S. Army and Department of Homeland Security at various locations in the city through Friday of this week in which some training involves discharging of weapons and helicopter patrols," the HPD statement said.
In Miami, the Miami-Dade Police Department issued two statements, one on Jan. 21 to announce the "joint military training exercise in and around the greater city of Miami and Miami-Dade County."
The Miami training included the use of military helicopters, the statement said.
A second statement issued Jan. 25 thanked residents for their cooperation. "This was routine training conducted by military personnel designed to ensure the military's ability to operate in urban environments, prepare forces for upcoming overseas deployments and meet mandatory training certification requirements," the statement said.