WASHINGTON, (Mar. 21, 2016) -- The United States Army will delay the reduction of an Alaska-based combat unit, determining that such a move would continue to degrade its ability to respond to new threats in a rapidly changing global security environment."The 4/25 is ready to rapidly deploy and conduct decisive operations in urban and mountainous environments," explained Acting Secretary of the Army, Patrick J. Murphy. "Given continued Russian aggression, the nuclear provocations of North Korea, and the continued threat from ISIL, we need this capability."The 4/25 Brigade completed a significant training exercise last month at one of the most realistic, rigorous combat training centers in the world, making it among the most highly-trained units in the Army."This is one of the most trained and ready units in the United States Army," said Gen. Mark A. Milley, the Chief of Staff of the Army.