F.L.A.G.

F.L.A.G. is a fictional chemical formula featured in the 1979 CBS television movie Captain America by director Rod Holcomb. It is used as the central plot device that prompts the action sequences for the movie. The concept of F.L.A.G. is based on the Super Soldier Serum, which was introduced in the pages of Captain America Comics #1 by Timely Comics in March, 1941.

F.L.A.G. is an anagram that stands for Full Latent Ability Gain. It was developed by scientist Doctor Simon Mills and has been described as a "super steroid". When artist Steve Rogers was nearly killed at the hands of spies trying to get information formerly possessed by his father, Doctor Mills subjected Rogers to the F.L.A.G. treatment, which imbued him with enhanced physical strength, stamina, and reflexes. The process also healed Rogers of his injuries and with his new abilities, as well as a special disc shield, a customized van and motorcycle, he became the costumed superhero known as Captain America.