Commandos Get Duty on U.S. Soil By ERIC SCHMITT ASHINGTON, Jan. 22 - Somewhere in the shadows of the White House and the Capitol this week, a small group of super-secret commandos stood ready with state-of-the-art weaponry to swing into action to protect the presidency, a task that has never been fully revealed before. As part of the extraordinary army of 13,000 troops, police officers and federal agents marshaled to secure the inauguration, these elite forces were poised to act under a 1997 program that was updated and enhanced after the Sept. 11 attacks, but nonetheless departs from how the...