For 444 days, Islamic revolutionaries held 52 Americans at the United States Embassy in Tehran.

Abroad, the Iranians held 52 Americans hostage for 444 days, and Carter's diplomatic and military rescue attempts failed.

Their sphere of influence includes areas where Iranian-backed fundamentalists believed to be holding 8 Americans and 10 other Western nationals are thought to operate.

The group is known for financing its operations by kidnapping and currently is holding two Americans hostage.

Iran, after the Iranian Revolution was holding 52 Americans hostage.

Among the olive trees near the trenches, one mass grave is said to hold 127 Americans.

The Party of God is widely thought to hold six Americans and 10 other Westerners captive.

The Party of God is widely thought to be an umbrella for clandestine factions holding nine Americans and seven other Western nationals hostage.

Other groups believed to consist of Shiite militants hold 5 Americans, as well as 10 other Westerners.

The joined spacecraft held a record 10 people - 6 Americans, 2 of them women, and 4 Russians.