Lieutenant Andrew B. Seal, the Industrial Hygienist Officer on board the aircraft carrier USS ENTERPRISE (CVN 65), performs an asbestos fiber count test to maintain shipboard safety. ENTERPRISE is currently preparing for a scheduled six-month deployment

Aircraft carriers are warships that act as airbases for carrier-based aircraft. In the United States Navy, these consist of ships commissioned with hull classification symbols CV (aircraft carrier), CVA (attack aircraft carrier), CVB (large aircraft carrier), CVL (light aircraft carrier), CVN (aircraft carrier (nuclear propulsion) and CVAN (attack aircraft carrier (nuclear propulsion). The first aircraft carrier commissioned into the United States Navy was USS Langley (CV-1) on 20 March 1922.