an Entity references as follows:
Celle Air Base German: Heeresflugplatz Celle (ICAO: ETHC) is a military airbase of the German Army. The airfield is situated southwest of the city of Celle, Lower Saxony, Germany. It was opened in 1934 and has been in military use ever since. Today the aerodrome is used by a helicopter training school, a helicopter liaison and reconnaissance squadron and a helicopter maintenance unit utilising the type Bölkow Bo-105.