The document discusses al-Qaeda and the threat it poses to the United States. It provides background on al-Qaeda, explaining that it is an Islamic terrorist organization based in the Middle East responsible for most US terrorist attacks. It then discusses reasons for al-Qaeda's attacks, including their desire to remove US troops from the Middle East, and ways the US works to counter al-Qaeda, such as using Navy SEALs and drone strikes. The document also notes that while al-Qaeda's numbers have decreased in recent years, they still pose a threat.