Birds of prey will protect the Brussels airspace during the visit of the American president.
During the visit of the American president Donald Trump birds of pray will be used to protect the airspace against potential DRONE attacks.
For some time now the Dutch police has been experimenting with the training of birds of pray to disable potentially unwanted drones. Thanks to their very strong claws the small plastic propellers from the RPAS's are unable to injure the birds.
How many birds were deployed & how to handle wanted DRONES or DRONE 'swarms' is unclear...