Omega-55 Sierra

Omega-55 Sierra is a contingency plan developed by the UNSC Office of Naval Intelligence to hunt down and eliminate rogue spartan personnel. Omega-55 Sierra was developed and put into place after the defection of Spartan-II commando, Soren-066. As per the contingency, a general plan of action has been created for the members of the spartan 4 and 3 programs, with notable individuals having personal contingency's or rules of engagement to be followed by pursuers. 
Under the contingency, all spartan-II and Cat-2 spartan-III's each have personal contingency plans. For example, Omega-55 Sierra-087 (contingency for spartan Kelly-087) all but forbids pursuers to engage in hand to hand combat, and promotes ambushes while engaging at range.
Another example is Omega-55 Sierra-058 (Contingency for spartan Linda-058), promotes use of carpet bombing and heavy usage of air support and reconnaissance. Ground units are only for confirming kill, or to be used if absolutely needed. Ground forces engaging Sierra-058 or in target area of bombardment are to be considered expendable and acceptable losses.
For some, such as Omega-55 Sierra-117, were used by Locke when attempting to hunt down an AWOL sierra-117. This plan primarily [REDACTED.]