Passage: Knowing an attack by the militants is imminent, the CIA staff of the Annex makes several desperate calls for help. The only help they can get is from Glen "Bub" Doherty, a GRS officer in Tripoli, who forms a team including two Delta operators that fly to Benghazi after several delays. Meanwhile, the GRS team fends off the militants as they try to breach the Annex perimeter. After repelling the largest attack wave, the Annex receives word from ISR that help is en route.

Question: How many Delta Operators did the GRS officer receive?
two