A president can serve under current law a total of 10 years. 4,4, and 2
The ShakeAlert system rapidly detects earthquakes that have already begun and then sends alerts to people's mobile phones to warn them before the shaking hits.
https://www.king5.com/mobile/article/weather/earthquakes/shakealert-earthquake-early-warning-system-going-live-may-4-washington-state/281-a12a1ac9-92bd-4876-a0a9-730a65b513f1
https://www.justice.gov/usao-wdwa/pr/edmonds-washington-man-sentenced-prison-molotov-cocktail-attacks-may-30-2020-protest