BENGALURU: With 54 days to go for Aero India 2021, the Ministry of Defence has issued a set of guidelines to be followed for the biennial air show and exhibition. The event will be held for five days between February 3 to 7 next year at the Air Force Station in Yelahanka and is expected to draw large crowds of people from India and abroad. Protocols issued by various government bodies will be implemented at the air show. Testing and quarantine guidelines for international delegates will be as per Government of Karnataka guidelines for international returnees.