As Bill mentioned there is air transmission and material transmissions.

Do I concentrate in solid mechanics, thermal/fluids, manufacturing and materials, aerodynamics, etc?

I've survived cancer three times so far and almost dropped dead from too much fluid around my heart 3 years ago.

But I would admonish everyone to wait and see and remain fluid and flexible about the future.

If he was there for more than a few hours the oils and fluids of the body start to soak into the carpet or floors.

Everything has been so fluid the last few years it's hard to keep up with the changes. 

I don't agree that there are any woman/man/gender fluid persons in this world that don't deserve more then what they have.

As far as I know, the breaches and theft of IRS data don't occur during return transmission. 

They include but are not limited to the following: Contaminated soilProximity to a hazardous waste siteOil and gas wells located on the propertyHeavy trafficAirport noise and hazardsOther sources of excessive noiseProximity to something that could explode, such as a high-pressure petroleum lineProximity to high-voltage power linesProximity to a radio or TV transmission towerProperty AccessThe property must provide safe and adequate access for pedestrians and vehicles, and the street must have an all-weather surface so that emergency vehicles can access the property under any weather conditions.Structural SoundnessAny defective structural conditions and any other conditions that could lead to future structural damage must be remedied before the property can be sold.

To make it even more challenging wireless tends to be fluid, one day it will be solid and the next may experience issues.