This was a planned operation. Even Hillary Clinton admitted that right away.
When you plan an operation, you plan for the equipment you will need.
For a kidnapping you would need: tools and explosives if you needed to get the victim out of a secure location; Getaway vehicles; only enough people to do the job; a means to secure the victim.
Do we see any of that at Benghazi?
No.
I believe you are wrong about that. The entire compound was ringed with armed men in trucks blocking the streets in advance of the attack. Secondly, I recall reading that BEFORE THE ATTACK there were cans of incendiary liquids placed outside the front gate that were used to start fires to smoke out the Ambassador.