The game was very much in doubt. A sold-out arena was basically silent. The chance of getting back to the NBA Finals for a third straight year could have slipped away. Cue LeBron James. A third quarter for the ages by the four-time MVP turned the game, and perhaps the entire Eastern Conference finals, around. James scored 16 of his 30 points in the quarter, fueling what was a 20-point turnaround at one point, and the Heat beat the Indiana Pacers 90-79 in Game 5 on Thursday night. The Heat lead the series 3-2, with a chance to finish it off in Indiana on Saturday night and move on to a finals matchup with the San Antonio Spurs. "That's what I came here for, to be able to compete for a championship each and every year," James said. I'm one step away from doing it once again. It's not promised. It's not promised at all. I made a tough decision. Obviously, I think we all know the story. I envisioned something that was bigger as far as a team ... and we've got an opportunity as a team, once again, for the third year straight to make a trip to the NBA Finals. Indiana was up 46-40 early in the third, surely sensing a chance to grab total control of the series. Over the next 11 minutes, the Heat outscored the Pacers 30-10, with James either scoring or accounting for 25 Miami points. He shot 7 for 10 in the third quarter; the Pacers shot 3 for 14. He had four rebounds in the quarter; the Pacers, as a team, grabbed six. He had four assists in the quarter; the Pacers had one. "That's LeBron showing his greatness and making it look easy," Heat coach Erik Spoelstra said. What we talked about was doing whatever it takes and competing for each other without leaving anything out there. His engine in that third quarter was incredible. He was tireless, he was making plays on both ends of the court, rebounding, covering so much ground defensively and then making virtually every play for us offensively. It's really remarkable. James added eight rebounds and six assists, and Udonis Haslem made his last eight shots on the way to a 16-point night. Mario Chalmers scored 12 and Dwyane Wade added 10 for the Heat, who ousted the Pacers in six games in a second-round matchup last season and will look to do the same this time around, albeit one round deeper. The Pacers led by as many as seven at one point, but had no answer for the Heat in the third and now have to win back-to-back games - against a team that hasn't lost consecutive games since early January. "I don't really know," Pacers coach Frank Vogel said, when asked if there's anything a team can do when James gets on a roll like the one he had in the third quarter. He was pretty special tonight. There's no question about it. This whole team is special. It's one of the best teams that this league's ever seen and we're enjoying competing against them. We know we can beat them, but we've got to play better than we did tonight. Haslem said Juwan Howard threw a few things in the locker room and had a few choice words for teammates at halftime - "a lot of bleeps and stuff like that," Haslem said - and that James echoed the same remarks just before the start of the third. "We had 24 minutes to play for our livelihoods," Haslem said. And that's how we played in the second half.