[bagster]

Why does Q sometimes sign as “Q, Delta” ya think?

[slag]

Dictionary of Military and Associated Terms

DELTA
This condition applies in the immediate area where a terrorist attack has occurred or when intelligence has been received that terrorist action against a specific location or person is imminent.

[SkyPilot]

I think he says Q and DELTA because the chatter/intelligence is coming from both him and another source.

I don't know why he posted that particular picture.