|Enterprise, Discovery, and Atlantis are retired ____.
|The U.S. Congress banned ocean dumping of ____ in 1988.
|The Senate ____ President Clinton of impeachment charges.
|The U.S. invaded Iraq in 2003 looking for weapons of ____.
|Two jets crashed into the ____ on September 11, 2001.
|The U.S. FDA banned ____ from food cans in 1993.
|President Bill Clinton signed a ____ bill in 1996.
|American Flight 77 crashed into the ____ on 9-11-2001.
||World Trade Center