We're playing Tom Clancy's Splinter Cell Double Agent for the PS2 in cooperative mode and are stuck.

We're on the very last Mission 14 - Tanker on the Way. We've stopped the engines and hacked the computer telling where the 3 crates containing the red mercury (or nuclear bombs?) are.

I think we've climbed every crate in the place and used EMF (up-arrow on the PS2) on them all, but have been unable to locate the proper one. Just what do you see when you finally find it? Any ideas? We hate to abandon the game when we are this close to its conclusion. We're scheduled to get together again tomorrow (Monday, February 18).

Thanks for any input anyone can give us.