On March 5, 2004, the Mexican Secretariat of Defense filmed 11 unidentified objects on its FLIR (forward looking infrared). The crew reported the UFOs at an altitude near that of their plane, 11,500 feet, and later told news reporters it felt as if they were surrounded. “I believe they could feel we were pursuing them,” the plane’s captain later said, according to an Associated Press article.
Sources in order of mention
Original AP News article: https://www.wired.com/2004/05/mexican-air-force-films-ufos/
Full audio translation: https://web.archive.org/web/20041224193517/
Skeptical account of case: https://skepticalinquirer.org/2004/09/the-campeche-mexico-infrared-ufo-video/
Alejandro Franz analysis of oil well lights: http://www.alcione.org/FAM/FLIR_CONCLUSION.html
Brad Sparks analysis of radar targets on nearby highway: https://web.archive.org/web/20041204194232
Cantarell Oil Field satellite image, CC: https://www.flickr.com/photos/evsmap/291263557