Crossword Clue:

WALK to advance on foot

AnswerCrossword Clue
IGUANODON30-foot-long dinosaur able to walk on either two legs or four
TAGUPPrepare to advance on a fly
TAGUPTry to advance on a fly out
BUZZALDRINSecond man to set foot on the moon
SCHMITTHarrison ..., last person to set foot on the moon
ALDENFirst Mayflower passenger to set foot on Plymouth Rock, so it's said
KICKSTARTERFoot-operated mechanism on a motorcycle, and what the first word in each answer to a starred clue can be