Past Tense - S3-E4
Revealing mistake: In the sequence when the three baddies are pushed down the slope, stunt doubles are used, with the black haired guy's being especially obvious. The stunt person is noticeably younger and leaner and with longer hair. (00:23:50)
Past Tense - S3-E4
Revealing mistake: As the helicopter takes off with the prisoner, guards shoot it repeatedly. In particular in a close-up they shoot off two grills on the engine combustion fuel drain. Looking at the close-up, you can see the wires used to detonate the charges, and bits of the black paper/gaffer tape that kept the explosion rigging together, flapping now in the wind. (00:07:55)
Past Tense - S3-E4
Revealing mistake: TC kicks the boss villain in the face as he tries to climb back the hill; the kick misses by a mile. (00:24:00)