President Obama, who returned from his holiday vacation today, will be briefed tomorrow about enhanced security and intelligence sharing in the wake of the Christmas Day terror scare. Meanwhile, more than two dozen names were added to the no-fly watchlist today, and the TSA has directed airlines to administer full body patdowns to all U.S. bound travelers from fourteen countries considered to have some link to terrorism. But these enhanced screenings have not begun in all airports. And if and when they are, they may not be able to detect the type of explosive used in the Christmas Day bombing attempt. When it comes to using full body scanners, privacy concerns persist. So tonight, we ask: Will the enchanced measures work? And if not, what will? Tell us what you think. You can follow "Nightline" anytime on Twitter: http://twitter.com/Nightline.