Questions still loom about whether the attack on the U.S. consulate that killed U.S. Ambassador Chris Stevens and three other Americans was an inside job or not.

FOX News Radio's Courtney Kealy, who reported extensively from Libya during the uprising has Part Three of our series, "Death of an Ambassador":

Securing America.

Recent security reports detail several attacks with low-level weaponry against foreigners in Benghazi.  Last June, there were rocket-propelled grenade attacks on the U.S. Consulate and a British diplomatic convoy.

(Fraser) "Most involved small arms, rudimentary home-made explosive devices.  And they caused damage to the facilities, but going on this alone, it seems there was no indication really that the Ambassador would be at risk inside the compound."

But according to Alan Fraser with the risk-mitigation company AKE, there was no recent precedent for the scale of this attack or that local militants had the skill to breach the U.S. Consulate.

(Fraser) "The groups that are known to be operating there and did not show signs of having this degree of capability and organization."

Courtney Kealy, FOX News Radio.

Click HERE for more of the series "Death of an Ambassador"

Click HERE to read Courtney Kealy's American Dispatch on Ambassador Stevens' death

Follow Courtney on Twitter: @CourtneyKealy