Tengah Air Base

Tengah Air Base (IATA: TGA, ICAO: WSAT) is a military airbase of the Republic of Singapore Air Force (RSAF) located at the Western Water Catchment in the western part of Singapore. It is the most significant airfield operated by the RSAF, as it hosts the bulk of its fixed wing frontline squadrons. The base is home to most of the RSAF's airborne early warning and control (AEWC) assets, its F-16C/D Fighting Falcons as well as a large proportion of its UAVs.

The air base carries the motto Always Vigilant, reflected in its primary motif of a black knight chess piece, which symbolises constant readiness and operational alertness. The accompanying sword represents the heraldic sword of war, while the castle signifies the state and its defence. Before Singapore's independence, the site operated as a flying Royal Air Force station known as RAF Tengah. The base is currently undergoing expansion to accommodate additional aircraft, equipment and infrastructure following the planned full decommissioning of Paya Lebar Airbase in the 2030s.