Operation: KALEIDOSCOPE was a series of assassinations in the early part of the 26th-century during the Insurrection. The targets were various rebel leaders. The operation was a change in strategy for the UNSC. 
On March 13, 2502, UNSC NAVSPECWAR, specifically Project: ORION, sent a young, but capable Corporal Avery Johnson to assassinate Jerald Mulkey Ander, a leader of the People's Occupation Government. The UNSC sent Johnson to Harvest, which, at the time, was a new colony, to assassinate him. This operation was also Johnson's final test for the Naval Special Warfare Sniper School.
Johnson acquired a position a fair distance from his target and set up an M99 "Stanchion" rifle. Johnson was accompanied by another UNSC Marine, presumably his spotter for making calculations for wind and distance.
When Ander's truck passed by, Johnson took the shot and successfully killed Ander.
- ↑ 1.0 1.1 1.2 Halo Mythos: A Guide to the Story of Halo, Page 55
- ↑ Halo: Contact Harvest, Page 64
- ↑ 3.0 3.1 Halo Graphic Novel, Page 122