MILITARY

Official: Yemen raid yields data on al-Qaida explosives

  • An emotional Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress.  (AP Photo/Pablo Martinez Monsivais)

    An emotional Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress. (AP Photo/Pablo Martinez Monsivais)  (The Associated Press)

  • Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, wipes her eyes on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress.  (AP Photo/Pablo Martinez Monsivais)

    Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, wipes her eyes on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress. (AP Photo/Pablo Martinez Monsivais)  (The Associated Press)

  • Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, is applauded on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress. (AP Photo/J. Scott Applewhite)

    Carryn Owens, widow of widow of Chief Special Warfare Operator William “Ryan” Owens, is applauded on Capitol Hill in Washington, Tuesday, Feb. 28, 2017, as she was acknowledged by President Donald Trump during his address to a joint session of Congress. (AP Photo/J. Scott Applewhite)  (The Associated Press)

A senior U.S. official says the Yemen raid by U.S. special operations forces gathered valuable intelligence on the al-Qaida affiliate there, including the explosives they're manufacturing and the types of threats they're developing.

The official said the list describing the types of intelligence collected during the January raid filled more than three pages and included data on al-Qaida in the Arabian Peninsula's training techniques and targeting priorities. Such information gives insight into the group's attack planning.

Questions have been raised about the effectiveness of the operation that ended in a fierce firefight. A Navy SEAL, 14 militants and several civilians were killed. Senior U.S. officials have called it a success.

The official wasn't able to discuss details of the classified military operation publicly and spoke on condition of anonymity.