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Visible crew/equipment: When Captain Navarro and the team are at the elderly victim's home, after Elle finds the bead from a necklace, in the next wide shot of Morgan, Navarro, Gideon, and Hotchner, the red T-mark can be seen on the floor in front of Gideon.
Chosen answer: Black SUVs are common police, military and dignitary vehicles around the world. It is not too much to assume they could be rented or owned by the police forces in the areas.
kristenlouise3
Other people have explained it but fore more information, federal cars would most likely be brought to the airport from the nearest agency, so they can drive out to their locations especially in rural situations.