On September 9, The Americans Requested Special Security Arrangements in Preparation For The Visit of Ambassador Stevens Which Were Not Granted

Another missed warning is only part one of the particular story. The first part, the way this information was discovered, is that there were (are?) still sensitive documents left at the consulate after the FBI finally got there and then left.

Video embedded below.

"Unbelievable!
It took the FBI several days to reach Benghazi and investigate the 9-11 terrorist attacks that left four Americans dead.
The FBI stayed for three hours.
They left behind several sensitive documents that were later scooped up by regional media outlets.

Today, Alaan TV, a UAE channel, revealed that letters found inside the consulate, written by the U.S. Consular staff and addressed to the Libyan Foreign Ministry and the Benghazi police chief, revealed security breaches at the consulate.
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There’s more:
“The Letters Revealed That Since September 9, The Americans Had Been Requesting Special Security Arrangements In Preparation For Arrival Of Ambassador Chris Stevens” – But That These “Were Not Granted”

Reporter: “The letters revealed that since September 9, the Americans had been requesting special security arrangements, in preparation for the arrival of Ambassador Chris Stephens to Benghazi. These arrangements included the police guarding the front and rear gates of the consulate around the clock, in addition to a mobile patrol and a bomb-sniffing dog."