DALLAS — Former officials in the George W. Bush administration say that hearing that Osama bin Laden has been killed makes them grateful that justice has finally been served.

Former Homeland Security Secretary Michael Chertoff said Monday that President Barack Obama showed courage in ordering the operation.

Bush was in power nearly 10 years ago when agents from bin Laden's al-Qaida attacked the U.S. on Sept. 11, 2001.

Former Bush adviser Karen Hughes says it took the efforts of two administrations to bring bin Laden to justice, adding "most of the credit should go to the military and intelligence."

In a brief statement Sunday night, Bush congratulated Obama and heralded the servicemen and women involved in the mission that killed bin Laden. He called bin Laden's death "a victory for America."