Straight from director McTiernan's director's commentary, it's the shot of Schwarzenegger lighting up his cigar.
— Todd Vaziri (@tvaziri) November 18, 2020
Listen below, in @mccrabb_will's tweet! (Don't worry, I'll address his "computer optical" statement.)https://t.co/vgWoiA1tHg
... with the exact pacing the editors and McTiernan wanted. It's a better sequence with Dutch lighting his cigar through the cut, rather than him lighting it during the second shot.
— Todd Vaziri (@tvaziri) November 18, 2020
Anyway, back to the visual effects shot. pic.twitter.com/sRk4Vg8JUZ
Here's a detail of the shot, rock & rolled, so you can better see the shot. The intent was to make it obvious that he was lighting his cigar in the shot.
— Todd Vaziri (@tvaziri) November 18, 2020
Most likely, on a darkened stage a black mannequin head was fitted with a cap & sunglasses and shot at an angle... pic.twitter.com/ul8xUEvtAQ