because it's hopefully a hoax
and until we know otherwise it serves little purpose to run footage of newscasters with little more to report than the evacuation. The exception being rolling news channels who can keep reminding us of it via news tickers while reporting other stuff.

on the other hand maybe there's a priority list somewhere that reads

1. Bombs
2. Brummies
(Mehitabel_Itrang, Sat 9 Jul 2005, 22:25, archived)