Trekipedia

U.S.S. Exeter NCC-1672

In 2268, the Constitution-class Starship Exeter visited planet Omega IV, where Captain Ronald Tracey brought back a deadly virus from an ancient bacteriological war, which infected his entire crew and reduced them to dehydrated crystals. Having developed an immunity from the planet’s atmosphere, Tracey returned to the surface and became involved in the internal struggles there, providing the primitive civilization with phasers. Tracey was discovered by the U.S.S. Enterprise NCC-1701 and arrested on charges of violating the Prime Directive.^[1]