We (husband and I) were there in 1975...just a year. I didn't see any marines but heard the aircraft on occasion.
I was a substitute teacher for first graders. They were sure cute.
I ended up knowing very few people but EVERY first grader in town knew ME. They couldn't remember my name but their body language said "I know you! Hello, teacher!!"
I left Barstow in Jan of 73. At the time, Marines couldn’t wear fatigues outside of base but they were out in town none the less. The aircraft were probably from George AFB outside of Victorville/Apple Valley. No aircraft out of the base.