The oldest Rick Flag was part of the original Suicide Squadron in World War II, but the movie focuses on his son Rick Flag Jr. This military man is often one of the leaders of Suicide Squad, though he seems kind of conflicted about it. Though highly skilled and trained, Rick Flag does not have superpowers.
It's the troposphere because : The troposphere contains 75 per cent of the atmosphere's gas. It also holds huge amounts of dust and water vapor, and is often dense with clouds and mist. Air pressure is greatest in the troposphere, because gravity pulls the atmosphere towards the Earth, squeezing most of its weight into this lowest layer. It's the troposphere because : The troposphere contains 75 per cent of the atmosphere's gas.
In simple context, my physics lecturer once explained to me: the reason why we live under an atmospheric pressure of 1 bar is simply because there is a column of air above us. As we move upwards (e.g. in an airplane or on top of a mountain), the height of this column is reduced, thus the atmospheric pressure is less. Therefore, the first layer of atmosphere (or the lowest layer) will experience the highest air pressure.