Will feels that there are better uses of their time. Wild goose chases about things in the sky seem to be more of a job for conspiracy theorists than police officers, and Will's been saying for days it was probably just a bunch of drunk teenagers shooting flares from the beach.
At least it's done now, they can get back into their usual routine. Conveniently they aren't waiting for long until something comes up. Will doesn't even knock on the door as he walks into Armand's office.
"Possible signs of a new drug about to hit the streets," he says, putting the file on Armand's desk.