 Complete the following phrase:  Following graduation from Florida AM University, General Calhoun enlisted as a Private in the Florida Army National Guard in August 1977. After a six-year break in service, he received a direct commission and appointment to 1st Lieutet in the Medical Service Corps on July 22, 1989. His follow-on assignments include Chief of Pharmacy Services, 131st Mobile Army Surgical Hospital MASH; Executive Officer, 131st MASH; Logistics Officer, 50th Area Support Group ASG; Director, Host Nations Support, 50th ASG and Director, Support Operations, 50th ASG. General Calhoun deployed with the 50th ASG in 2003 as Director of Host Nations Support during 