"Uh-oh", Lue said Thursday as he punched in a code to silence the screaming siren.
The Cavs are in a risky spot.
The last time the Cavs were in this situation - Game 7 of the first round against Indiana - James responded with 45 points.
The mood was tempered inside the Boston Celtics locker room following Wednesday night's Game 5 win over Cleveland.
"I don't enjoy being in the position where it's you lose and go home", LeBron said before Game 6 tonight in Cleveland. I'm fine. And I didn't mention the fatigue either. "He didn't play him tonight, so it kind of threw us for a loop". Both James and Lue acknowledged that James looked exhausted - and after the game James told cleveland.com and ESPN that he has been losing sleep - but he is not "sick" as has been suggested on social media.More news: Russia's Rusal says Deripaska resigns as director
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James scored 45 that day and the Cavs survived.
This isn't purely a complaint about aesthetics: Game 5 shed light on one of Cleveland's central problems. During timeouts, he wiped sweat and perhaps some frustration from his forehead. If he does, this series won't just rank as an accomplishment for James - it will be one of his best. His teammates are draining him.
Rookie Jayson Tatum led the Celtics with 24 points, seven rebounds, four assists, four steals and two blocks. Solid, but sub-par by his standards and he committed six turnovers and missed some makeable layups.
Cavaliers starting guards George Hill and J.R. Smith were completely outclassed Wednesday. Morris shoved Nance back, hitting him in the side of the face. After Game 5 he was asked if he was under the weather. According to Game Score, a metric created by John Hollinger to give a rough measure of a player's productivity for a single game, James (15.3 game score) and Love (10.7) each had their second-worst performance in this series, which further illustrates that, without help from at least one other member of the supporting cast, the Cavaliers look doomed.
As the pressure and physicality intensifies with Game 6 and perhaps a Game 7 approaching, it will be interesting to see how this 20-year-old phenom adjusts. In the entirety of the 2018 NBA Playoffs, only nine such games have been achieved. His body has been forced to handle more than he imagined.
Among the noise that will surround - and possibly engulf - the Cleveland Cavaliers in the next two days will be chatter of LeBron James' streak of NBA Finals appearances possibly coming to an end. Cleveland is making 9.6 three-point attempts per game against the Celtics in the Eastern Conference finals, fewer than the team made against the Toronto Raptors (11.5) or Indiana Pacers (10.4). LeBron has an option to leave the Cavs after this season and is sick of the team relying exclusively on his performances to advance in the playoffs, as he's getting minimal assistance from the rest of the squad.