Possible Clues:

• Pants part
• Be successful, as a proposal
• One way to cover a lot of ground
• Travel to or from 67-Down
• The ____ (1986 Cronenberg movie)
• King's X "Ogre Tones" song that soars?
• With 57-Across, light fishing gear
• Outfielder's chance
• Buzzer that can follow the last parts of 18-, 27-, 45- and 57-Across
• Travel like Superman