This is a tough one!
Yes you need to press your fire button when using your binoculars, just like you did to take out some flak66's in a previous mission.
Their are two places where you can snipe from, choose the second entrance where you end up having to go up a ladder. Once there you need to snipe all soldiers before they have a chance to get to the plunger and blow the bridge.
Once that is done, get ready to move out, fast! A tank will soon target you and let loose. Get outta there when you notice that tank aiming for you and head back to the first entrance and the other sniper position. You will have to take out some guards along the way.
Once there you will being pulling double duty between sighting tanks for airstrikes with your binoculars and watching for enemy soldiers flanking your six(your rear).
It's tough, but can be done!
Good Luck
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[This message has been edited by sgtwolf (edited February 19, 2002).]