Major Donovan is a military commissioned officer of the Criminal Investigation Division.
He was called over to the Pentagon by Scott Pritchard to coverup Susan Atwell's murder to help Secretary David Brice by pinning the blame on a supposedly KGB mole, Yuri. He and the CID officers worked through the evidence at Susan's house, such as making a negative side of a Polaroid photo become positive that Susan took earlier, and tracing in and out phone calls. He assigned two former CIA assassins to track anyone that knew Brice and Susan's relationship, mainly Nina Beka, who knew Susan was having an affair with Lt. Commander Tom Farrell, who is working with him and at the Pentagon. He than brought two witnesses who saw Farrell with Susan.
After the confrontation, Major Donovan, along with the CID, storm in to see Scott has killed himself in front of Farrell and Brice, who the latter than claims Scott is Yuri.
Donovan was later called to see the developed positive Polaroid photo to see Farrell who witness his confession of being Susan's lover and Brice's involvement in her murder.
As of 2011, Major Donovan later took part in the investigation of a global murder spree after hearing about the deaths of Brice, Duvall, and KGB agents.