Surprisingly his voice was quite clear, and he was well spoken. Talks a lot about the stuff shown in the movie as it is (apparently) in Burma. Good commentary.

Stallone's commentary for this film is surprisingly interesting! He talks mostly about the production of course, but also talks about the casting, as well as the various character's motivations and how the actors developed them. Plus he has lots of interesting anecdotes about the production, such as a river being temporarily damned when the water level was too low.