Identify and then discuss unique safety

Identify and then discuss unique safety (not security) issues you see related to each of the five modes of transportation.( Air, water, rail, and highway and Pipeline)  It is possible to identify the same considerations for some but not all modes, they all have unique dimensions. Your submission should discuss each mode and start by identifying unique safety considerations. You then should have a separate paragraph addressing safety considerations that might apply to groups of modes, there should be no safety consideration that applies to all modes, that is beyond the scope of the topic