Nice well intended post, fishbane.
Tons of people are injured or even killed each year in these types of incidents. I would encourage anyone who is not very familiar with these types of tools (years of use) to get some knowledge (guided learning) before using them.
Since most jacks used today are hydraulic pressure jacks it is important to understand they are for lifting only, not for supporting for a lengthy period of time. These jacks have only a seal keeping that pressure locked in. If the seal fails, the weight of the vehicle falls. Simple as that.
Also, it is easy to rock the vehicle off of any single point of support. The vehicle again will fall.
Use jack stands, and use them properly in pairs and on the correct support locations.
Prayers go out to Travis Wittlake.