A line of sirens: They’re all okay

A line of sirens: They’re all okay, but please give them way.
 
On friday the 9th of June, the 18th edition of KinderBeestFeest takes place at Artis Royal Zoo in Amsterdam. This privite event is organised for over 5000 chronically ill and/or disabled children and their families. The children will be picked up from several hospitals in North-Holland and Flevoland and driven to Amsterdam by the emergency services.
 
If you hear a lot of sirenes on the 9th of June, please don’t call 112. They’re all okay, but please give them way. And wave if they pass by!