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The withdrawal of U.S. troops from Afghanistan is leaving intelligence agencies scrambling for other ways to monitor and stop terrorists. They'll have to depend more on technology and their allies in the Afghan government _ even as it faces an increasingly uncertain future once U.S. and NATO forces depart.

``You may not be blind, but you're going to be legally blind,'' said Rep. Mike Waltz, a Florida Republican and Green Beret who served in Afghanistan. Waltz said in an interview that while he believed American forces would still be able to detect threats, they would have to respond with lesser intelligence and more complex operations from bases outside the country.

The Afghanistan withdrawal was ordered by President Joe Biden. He has said it's time to end America's longest war after two decades of a conflict that killed 2,200 U.S. troops and 38,000 Afghan civilians, with a cost as much as $1 trillion.

But that withdrawal comes with many uncertainties as a resurgent Taliban captures ground and fears mount that the country could soon fall into civil war. The U.S. is still working on agreements to base counterterrorism forces in the region and evacuate thousands of interpreters and other Afghans who helped the American war effort.