The New Yorker's big piece on How They Got Bin Laden ends with this vignette, of Obama thanking the SEAL team:

Before the President returned to Washington, he posed for photographs with each team member and spoke with many of them, but he left one thing unsaid. He never asked who fired the kill shot, and the SEALs never volunteered to tell him.

(The photograph and slightly unfortunate title above both come from the New York Review of Books blog).