airpolice
Ridiculous requirement. You cannot “sanitise” an airshow environment unless you clear all activity beneath a display footprint. And any footprint beneath the possible uncontrollable trajectory of the display aircraft after mechanical failure, pilot error etc.
This has never been done. i.e. clearing out all the residents and traffic movements at Aldershot and Farnborough during the air display?. Impossible and unreasonable, and would shut down future air displays if implemented because of the Shoreham event, however tragic the outcome.
You can never have absolute safety unless you ban the activity taking place.