Security measures related to Friday’s presidential inauguration are already visible, in the form of Jersey barriers placed on the streets near Lafayette Square. Parking restrictions will begin Wednesday. Streets will start closing Thursday. By week’s end, the nation’s capital will have transformed into a virtual fortress of roadblocks, fences and armed police. Streets will be

barricaded with trucks filled with sand. Five Metro stations will close Friday. Crossing Pennsylvania Avenue will be next to impossible. The peaceful transfer of power is made possible by overlaying a tight security grid using 28,000 security officials over 100 square blocks of prime downtown real estate — from the White House to the Capitol and beyond, with a price tag in the tens of millions of dollars. READ MORE