(CNN) - President Barack Obama said Friday his meeting with the commandos who executed the mission against Osama bin Laden's compound was a chance to say "job well done."
"They're America's quiet professionals," Obama said. "They could have chosen a life of ease. But... they volunteered (and) chose to serve."
"They practiced tirelessly for this mission, and when I gave the order they were ready," he said.
President Obama told troops at Fort Campbell, Kentucky,that "we are ultimately going to defeat al Qaeda. We have cut off their head."
"Even before this week," al Qaeda's leaders "were under more pressure than at any time since 9/11," he said.
"Our strategy is working and there is no greater evidence of that than justice finally being delivered to Osama bin Laden," he said.