A tease of the behind-the-scenes scoop we got on the set of the fourth 'Terminator' installment.

Reprising a trilogy is hard work. Reprising one of sci-fi's most heralded and closely-critiqued series is near impossible.

That's why the decision to revive 'Terminator' for a fourth installment (with, almost definitely, more to come) was met with mixed emotions. And the announcement that McG would direct received even more passionate outcries -- could the 'Charlie's Angels' guy really go head-to-head with John Connor and Skynet's toughest machines? Well, he has, and judging by the first trailer and footage shown at this year's Comic-Con, even die-hard 'Terminator' fans will not be disappointed.

Moviefone was invited to the set of 'Terminator Salvation' in Albuquerque, New Mexico, last June to see Christian Bale step into John Connor's future-fighting shoes, with Bryce Dallas Howard as his wife, Kate, and Anton Yelchin as his father, Kyle Reese. Peeking at the post-apocalyptic world of 2018, we saw a giant old-school Terminator in action, some sleek futuristic T600 models, major explosions, Skynet's headquarters, a ruined Los Angeles, concentration camp-style transports for captured members of the resistance and much, much more.

As one of the movies' most famous lines heralds, we'll be back, so don't forget to check out our full On the Set: 'Terminator Salvation' report in a few months, before the movie hits theaters May 22, 2009.