The gun safety group founded by former U.S. Rep. Gabby Giffords of Arizona has recruited an unlikely ally: a group of former high-level military officials.

The political action committee Americans for Responsible Solutions, cofounded by retired Navy veteran and astronaut Mark Kelly, has formed a new group composed of military officials who will advocate for stricter gun regulations.

The group includes retired U.S. Army Gen. David Petraeus, former Coast Guard commander Adm. Thad W. Allen and retired Army Gen. Stanley McChrystal, among others.

The advisory committee was announced Friday in Washington, D.C. Allen, who retired in 2010, said he joined the group because gun violence is at a level that requires national response.

Giffords survived a mass shooting in Tucson five years ago that left six dead and 13 injured, including the former congresswoman.