More than a decade after the 9/11 terror attacks, the FBI has released images of the fiery aftermath at the Pentagon.
Published on their website 'The Vault' the agency has posted 27 photos of what emergency services came face-to-face with and the extent of the damage to the Department of Defence headquarters in Virginia.
It was just one of the targets hit by hijacked planes that day, the most prominent of the twin towers at New York's World Trade Centre.
The 2001 attacks killed 2996 people and injured more than 6000. The majority of the dead were in the World Trade Centre and in the immediate area, while 125 died at the Pentagon.
They were remembered by President Barack Obama at the Pentagon site last year for the 15th anniversary of the attacks.
"We remember, and we will never forget, the nearly 3000 beautiful lives taken from us so cruelly - including 184 men, women and children here, the youngest just three years old. We honour the courage of those who put themselves in harm's way to save people they never knew.
"Fifteen years may seem like a long time, but for the families who lost a piece of their heart that day, I imagine it can seem like just yesterday," he said.
The photos show plane debris littering the well-manicured lawn, fire engines dousing flames, search and rescue staff looking through rubble and the search for clues.