ARLINGTON, VA - SEPTEMBER 11: People visit the new Pentagon Memorial following a dedication ceremony on the seventh anniversary of the 9-11 terrorist attacks September 11, 2008 in Arlington, Virginia. U.S. President George W. Bush dedicated the memorial, made up of 184 "memorial units" each dedicated to an individual victim killed at the Pentagon when American Airlines Flight 77 slammed into the Department of Defense's headquarters on September 11, 2001. (Photo by Mark Wilson/Getty Images)
The U.S. military is turning a piece of Pentagon rubble into a reminder of how the armed services responded to the Sept. 11 attack at the Pentagon.
On Monday, a ceremony will be held at Fort McNair to dedicate the 800-pound block of limestone. It will honor the service members and civilian employees of the U.S. Army Military District of Washington, specifically those who responded to the Pentagon after a terrorist attack nearly 10 years ago that killed 189 people.
This is the last of four such presentations. Pieces of the Pentagon also have been given to the Arlington County Fire Department, the FBI and the Fire Department of New York.