Navy SEAL Team Six gained worldwide fame for their role in the raid that killed Osama bin Laden.
But this weekend's mission in eastern Afghanistan ended on a much more devastating note.
30 American troops died - including 22 Navy SEALS - when their helicopter was shot down by what is thought to be an insurgent's rocket-propelled grenade. Most of the Navy SEALS were part of the now famous Team Six - although none of them participated in the bin Laden raid.
Their extraordinary service and sacrifice will not be forgotten.
If you would like to donate to help the families of those lost go to The Navy Seal Foundation. You can also text "SEAL" to 90999 to donate $10 to the Navy SEAL Foundation. Or if you can find them on Facebook.
The Foundation works to provide immediate and long term assistance to the Naval Special Warfare families.