An energetic Gov. Mike Pence praised Donald Trump and lambasted Hillary Clinton during a rally in Westfield, Indiana on Tuesday amid speculation he is one of the few selects left to become Trump’s running mate. Trump made no announcement of vice presidential news, but seemed to relish teasing his Indiana audience with the prospect of Pence.

“I don’t know if he’s going to be your governor or your vice president. Who the hell knows! Good man,” Trump said at the end of a nearly hour-long speech to about 6,500 supporters at the Grand Park Events Center.

Pence on Hillary at the rally following Trump: “As the proud father of a United States Marine, let me say from my heart we don’t need a president that took 13 hours to send help to Americans under fire. Anyone who did that should be disqualified from ever being commander in chief of the armed forces of the United States of America.

While some Trump supporters in the audience were lukewarm about the prospect of Pence joining Trump on the ticket, others said they saw something new and invigorating in Pence’s speech.

“That’s the most exciting I’d ever heard or seen the man,” said Lyle Enyeart, a Pence supporter from Warsaw. “Man, what a ball of fire there.”