抓获马杜罗的三角洲部队，是什么来头？

Group 1 - The core point of the news is the capture of Venezuelan President Maduro by U.S. Delta Force, which has drawn global attention [1] Group 2 - Delta Force, officially known as the 1st Special Forces Operational Detachment-Delta, is one of the most secretive special operations units in the U.S. military, established in 1977 [2] - The unit's primary responsibilities include counter-terrorism, behind-enemy-lines raids, and protection of dignitaries, with an estimated total personnel of around 1,000, including operators and support staff [2] - Delta Force gained significant media attention during the 1993 "Black Hawk Down" incident in Somalia and was involved in the operation that killed ISIS leader Abu Bakr al-Baghdadi in 2019 [2]