Season 3 Episode 3 at 1:17 , there is a shot of a footlocker with Earl Swagger name and USMC Serial # 06543.In Vietnam the serial numbers had 7 digits and in 1967 generally were 20xxxxx
(mine was 21xxxxx) . The 06543 was from WW II.Marines like to jam each other up on who had the lowest serial number .
When Bob Lee walks back to his Bronco and finds a note on the drivers side mirror. A Chevrolet logo can clearly be seen on the mirror. The Bronco was made by the Ford Motor Company.