One man is dead and another severely injured after a shootout at one of the main gates of the National Security Agency located at Fort Meade, Maryland.

Two men dressed as women attempted to “penetrate” the entry point with their vehicle when a shootout occurred, officials said.

"There are indications they were dressed as females," an official said.

At least one officer suffered non-life-threatening injuries. Aerial images from news helicopters on the scene appear two show two damaged SUVs.

One perpetrator is confirmed dead on the scene; the other "severely injured” and is not likely to survive, according to one official.

The FBI said they do not believe the incident is related to terrorism. Law enforcement sources say there are initial indications that the vehicle used by the suspects was stolen. The FBI evidence response team is on the scene investigating and testing for the possible presence of drugs.

The incident is being investigated by FBI, NSA Police and Army Criminal Investigation Command. Anne Arundel Police and Maryland State Police are also on the scene assisting.

Meanwhile, President Obama has been briefed on the incident, according to White House spokesman Eric Schultz.

BOFH wrote: Meanwhile, President Obama has been briefed on the incident, according to White House spokesman Eric Schultz.