While I never wore a Seiko in any operational capacity during my time at the CIA, the Japanese
link brand has a long history in the intelligence and Special Operations community. My predecessors in the 1960s and 1970s wore
link "MACV-SOG" Seikos during covert operations in the Vietnam War. Maritime Special Operations units (including the Navy SEALs) were issued Seiko Divers until at least
link the mid-1990s when they were replaced by digital G-Shocks.