3:06 I was messing around with the open circuit board of a disposable camera one time, burned a square off of my thumbprint from touching something directly connected to the/a capacitor. Imagine what bigger electronics can do.
Confined space entry. That’s any enclosed space without proper ventilation. There may be toxic gases generated by microorganisms or low levels of the oxygen that they used as part of their metabolism.
Iriconji box jellyfish. Most people don't realize it, because in open seawater they're nearly invisible to the naked eye, even if there's hundreds or thousands of them per galon. They're tiny, translucent, EXTREMELY painful, very lethal to swim through, and the reason I don't swim in the ocean.