The Headquarters and Service Battalion powder puff football team reviews their offensive plays during practice Monday. The team is coached by 1st Sgt. Charles Callahan and Staff Sgt. Hector Alanis. - The Headquarters and Service Battalion powder puff football team reviews their offensive plays during practice Monday. The team is coached by 1st Sgt. Charles Callahan and Staff Sgt. Hector Alanis.