"The last Rambo, it was unrealistic. You know, you don't walk around in a desert, in 130-degree heat, with a tank top on. You'll get blistered on a beach in Miami in six hours! So, we definitely pushed that envelope a little too far." Sylvester Stallone concedes 1988's Rambo III was hard to take seriously. Stallone is the star and director of the franchise's latest film, RAMBO, due out in early 2008.