The Army's Delta Force was primarily tasked ... way for the 75th Ranger Regiment to take on more missions. Rangers in Iraq and Afghanistan went after the same high-value targets as Delta Force ...

Colo., told Morning Edition that "the risk of casualties goes up tremendously" if adversaries learn of military operations.

The Pentagon has faced questions from lawmakers, local leaders and citizens over the removal of military heroes and historic mentions from Defense Department websites and social media pages.