Baltimore/Washington International Thurgood Marshall Airport (IATA: BWI, ICAO: KBWI, FAA LID: BWI) is an international airport located in Linthicum in northern unincorporated Anne Arundel County, Maryland. The airport is 9 miles (14 km) south of downtown Baltimore and 32 miles (51 km) northeast of Washington, D.C.
1. staff sergeant-a noncommissioned officer ranking above corporal and below sergeant first class in the Army or Marines or above airman 1st class in the Air Force. sergeant-any of several noncommissioned officer ranks in the Army or Air Force or Marines ranking above a corporal.
A Master Sergeant is often specialized in certain field or subject matter. Master Sergeant is the 9th rank in the United States Army , ranking above Sergeant First Class and directly below First Sergeant. A master sergeant is a Noncommissioned Officer at DoD paygrade E-8, with a starting monthly pay of $4,051.