Caller Briefing: You work at a local convenience store. About 5 minutes ago you heard a loud boom in the back storage room and now you can see smoke seeping under the door. Your coworker has been working in the back storage room, taking inventory. You don't know where he is now.

INITIAL REQUEST FOR ASSISTANCE STATEMENT: Send someone quick! There's smoke coming out of the back storage room! 4407 Parker Ave. 416-234-4578

who should be dispatched to the scene? Chief 1, engine 11, pumper 12, quint 14, ladder 15, hazmat 1, engine 21, pumper 22, quint 25, brush 1, engine 31, engine 31, pumper 32 and/or quint 33?

this scenario would describe what kind of INCIDENT TYPE?