Related Clues:
- Opening jump
- Be in the opening lineup
- Turn on the ignition
- The date 6/6/44
- Dive in, so to speak
- Start of Operation Overlord
- Critical time of action
- When H-Hour happens
- Fateful day in June
- Sudden movement in temperature on Earth, for example
- Set into motion
- Throw the first pitch
- Attack-launch time
- When the Battle of Normandy started
- Word printed on mazes