Operation: HYPODERMIC

Operation: HYPODERMIC was an effort by the Office of Naval Intelligence to collect information concerning the Covenant between January 2532 and August 2552. In this time dozens of Prowlers were deployed. HYPODERMIC was cancelled following the Battle of Reach.

Timeline (Military Standard Time)

 * January 19, 2532: Codename: COALMINER gives Codename: SURGEON a progress report on the operation.
 * July ??, 2552: Prowlers search UNSC controlled space for Covenant forces, hoping to locate the enemy's base of operations.<ref Halo: Fall of Reach
 * August 29, 2552: The AI Cortana discovers that three ships currently docked at Reach orbital stations, the, the , and the , are actually ONI, rather than civilian, vessels after intruding into an ONI database . Cortana does not realize that these ships are part of HYPODERMIC.
 * August 30, 2552:
 * 0000 Hours: Mere hours before the Covenant attack fleet is detected at Reach, COALMINER detects the intrusion and removes Circumference from Reach's database to prevent the unauthorized discovery of HYPODERMIC.
 * 0558 Hours: Due to isolation of the Circumference from the Reach network, Station Gamma Dockmaster AI Doppler is unable to implement the Cole Protocol on the prowler during the Battle of Reach. Covenant intrusion software detect this oversight.

Characters

 * Codename: SURGEON
 * Codename: COALMINER