He slewed the Tomcat violently back toward the incoming raid and grabbed for altitude.
The first line of defence against the Luftwaffe was detecting incoming raids.
London police were warned of an incoming raid around 23:00; a few minutes later small incendiaries began to fall.
Another was the Allied advance across western Europe which deprived the Germans of their early warning systems for detecting incoming raids.
When other units detect an incoming raid, the unit (usually a cruiser) can go active as the raid moves into their engagement envelope.
The detection and interception of incoming raids was as follows:
Its continued warnings of incoming raids were a crucial benefit to Fighter Command.
Putting the group's fighters on station to intercept the incoming raid depended on expert prognostication of its direction and speed.
The first incoming raid appeared on the radar screens at about 1345, still 32 miles from the ships.
The next day 92 intercepted an incoming raid over the Thames estuary.