Answer: LED

AnswerCrossword Clue
LEDHad the advantage
LEDOpened a hand
LEDRock's .. Zeppelin
LEDZeppelin starter?
LEDPioneered
LEDWas in the vanguard
LEDZeppelin preceder
LEDWent in front
LEDWas in front
LEDDirected
LEDHeld first place
LEDSpearheaded
LEDWas in charge
LEDTook the helm
LEDMade the important decisions
LEDTook the initiative
LEDServed as point man
LEDChaired
LEDTopped one's division
LED--
ledclue
LEDWent first
LEDGuided
LEDPlayed first with Goren
LEDTook charge
LED.. Zeppelin
LEDDigital-clock feature
LEDHeld the reins
LEDOpened with
LEDTopped the heap
LEDWas up on points
LEDConducted
LEDStarted
LEDStarted the bidding
LEDTook charge of
LEDWas a bellwether
LEDEmulated Moses
LEDHeaded the group
LEDWas followed
LEDBlazed a trail