Does Les think the departure will happen in our lifetime?
The expectation expressed is that believers will live to see the departure. It is said we are getting closer and faster, and will suddenly be gone from this place to the other. The departure must occur before the tribulation and the revealing of the man of sin.
Les explains that the tribulation cannot begin until there is the departure. He says, "You and I, and I think we're going to live to see the day," because we are getting closer and closer and faster and faster to the departure. At that time, believers will suddenly be gone from this place to the other. He ties this to the text that the man of sin, the son of perdition, must be revealed after the departure, and he notes the analogy with Judas Iscariot, though he does not get dogmatic about it.