Navy spokesman Joseph Gradisher said the Navy doesn't know exactly what the objects in these videos are.
"The three videos (one from 2004 and two from 2015) show incursions into our military training ranges by unidentified aerial phenomena," Gradisher told NBC News in an emailed statement.
"The Navy has characterized the observed phenomena as unidentified," he said.
The video called FLIR1 shows an oblong-shaped object, which accelerates out of view from sensors. The group says that video is from 2004 and the "2004 Nimitz incident."
Gradisher did not name the videos in his emails, but said the video from the 2004 sighting is from an aircraft from the carrier USS Nimitz.
In the video called Gimbal, a crew member is heard saying "look at that thing" about an object that they said appeared to be going against the wind. One says they believed it was a drone.
The video called Go Fast, which the group says is from 2015, shows an object that appears to be over water and crews are heard asking "what the f--- is that?" and "what is that, man?"