Simpson was a United States Army National Guard captain who lead a squad into the White House during the Third Echelon Conspiracy to secure the President of the United States.

Biography

2011: Third Echelon Conspiracy

Captain Simpson entered the Oval Office in the White House, after Sam and Grim saved the president. He enters the room with another soldier ready to shoot and orders Sam to drop his weapon and get on the floor. President Caldwell advises him with a "I don't see anyone else here, and I'm sure you don't either." and insists that they walk out of the room. He understands her gesture, secures the president and leaves Tom Reed to be dealt with by Sam and Grim.

Trivia

• The uniforms of Captain Simpson and the U.S. Army National Guard resemble the camouflage from today's U.S. Army with a makeshift Army Combat Uniform (ACU pattern).
• The ACU Army Troops can be fought against in the Deniable Ops mode "Last Stand" and many reports have them to be the hardest adversaries in the game mode. Though the American flag is present on their arm sleeves, they speak with Russian accents.