light flashes

6 declassified cases mention this

• PDF · 1973NASA-UAP-D007, Skylab Technical Crew Debriefing 1973
• AUD · 1972NASA-UAP-D028, Apollo 17 Crew Medical Debriefing, 1972
• AUD · 1972NASA-UAP-D029, Apollo 17 Crew Medical Debriefing (Continued), 1972
• AUD · 1971NASA-UAP-D026, Apollo 14 Debriefing, 1971
• AUD · 1971NASA-UAP-D027, Apollo 14 Debriefing (Continued), 1971
• AUD · 1969NASA-UAP-D008, Apollo 12 Medical Debriefing - Tape 12, 1969