Prolonged UFO sighting outside Langley AFB over Chesapeake Bay today

[pianopraze]

What I read on that Daily Mail article was that a retired senior Pentagon official said that, not people on the base.

Both are true.

several people posting they are seeing them coming from a mothership on Twitter.

just carries more weight coming from military person, thus that is what’s in news article.

edit: I should say "on and around the base". Most of those reporting on Twitter seem to be civilians from around the base.