 In addition to normal operations, task force Soldiers also maintained their proficiency with live fire exercises.In October 2009, Task Force Nightstalker began familiarization training with their relief force, the 231st Maneuver Task Force, a unit consisting of soldiers from both the 231st Brigade Support Battalion (ND ARNG) and the 137th Infantry Regiment (KS ARNG).In late October, Task Force Nightstalker officially handed over responsibility for their area of operations to the 231st Maneuver Task Force.