The rescue truck you sent does it happen to be a rescue/Engine?
Quints will act as a fire truck as well as platform.
Mobile command will act as an mcv and a chief.
Rescue Engine will act as rescue and fire truck.
Pumper tanker will act as a fire truck and a tanker.
For a smoke investigation call. I send a quint and a chief. The call requires a fire truck, platform and chief. I send the 2 and it will clear out just fine.
Nope it's a standard rescue