UFO investigations by the US military.

I remember watching this in my 70s youth and I found it reasonably entertaining. However, I think I was a bit turned off by the formal nature of the two leads. Not saying their acting was unrealistic or anything like that but in this period there was another investigation-into-the-weird series going on - Kolchak: The Night Stalker (1974) - and when I was a kid I warmed to that more light hearted approach to lead characters.

I always liked the footage of the actual UFO encounters. When watching today I think I heard a sound effect from Star Trek Original Series (1966) and at one point I almost thought I was looking at stock footage from This Island Earth (1955) - today it looks very retro!

Not sure if I would ever bother getting this show on DVD (if it is available?) but I would suggest a few screenings on Youtube if you have time to kill.