...Authorities discovered 650 pounds of Semtex secreted in a warehouse in the capital...where the Aug. 9 blast occurred. The Semtex was hidden in 13 crates covered by piles...including rocket-propelled grenades and the Semtex, U.S. officials said. An al-Qaida...

...s) belonging to al-Qaida's Martyrdom Battalion could crash-land an aircraft packed with high explosives (C-4 and semtex) into the Pentagon, the headquarters of the CIA or the White House." Until the report became public, the Bush administration...