Partial set identification
The "Red Support 1 x 6 x 5 Girder Rectangular" answers this.

It's only in two sets, and in 3368 there are 10, which your picture doesn't show, so this is probably 4430 Fire transporter. 

EDIT: There are no "Trans-Light Blue Panel 1 x 2 x 2 with Side Supports - Hollow Studs" in 3368, so this is definitely 4430.