Answer: grissom

AnswerCrossword Clue
GRISSOMGus who rocketed
GRISSOMFirst man to fly in space twice
GRISSOMHead guy on CSI
GRISSOMAstronaut Gus
GRISSOMSecond American in space
GRISSOMGemini 3 commander
GRISSOMAstronaut Virgil (Gus) ...
GRISSOMSecond American to fly in space
GRISSOMGil ..., original lead role on "CSI"
GRISSOMGUS