They might think about adding air conditioning to their fleet. It's 2019. Furthermore they should probably not hold their meetings like its a Gulag Archipegalo. Also, a more open communication structure between management and employees would behoove them.
If you want to advance and accept the responsibility there are numerous opportunities. Educational achievement is somewhat important yet the culture is similar to crabs in a bucket. So you will need to be cautious yet very professional.
Job Security, excellent salary with benefits
crabs in a bucket mentality and blocking for advancement
I had to ask union APWU to see if I could get a shift change because of pregnancy. It took a lil while but by Dr orders my shift was changed. It was difficult but the union made sure I received a shift change.