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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clue for "GRISSOM"

GRISSOM: Gus who rocketed; First man to fly in space twice; Head guy on CSI; Astronaut Gus; Gemini 3 commander; Astronaut Virgil (Gus) ___; One of 39-Across; Second American to fly in space; Gil ___, original lead role on "CSI"; GUS; William Petersen's role on 112-Down; First American to go into space twice