Also flightradar24 feels something that should benefit heavily from caching especially in an instance where lots of people are all tracking the same thing.
Heavier caching for non-logged in users is a basic of keeping sites up against unexpected influx because the vast majority of "new" (i.e. spikey) traffic won't have accounts, and won't be as fuzzy about seeing cached data, and are harder to monetize than logged in accounts.
Nancy Pelosi visiting Taiwan, which China is opposed to.
The House is similar to the UK Parliament. She is elected to her position by the members of the House.
Since Democracts control the House this term, they elected Nancy Pelosi as Speaker for this term.
The President has primary responsibility for foreign affairs. The Speaker taking this action could be interpretted as stepping on the toes of the President, or could have tacit approval of the President as a kind of stalking horse.
I've seen AF1 land at the airport here (Bozeman) -- it flew in to the area at high altitude then circled tightly reducing altitude until final approach. I assumed to reduce the chance of a stinger hit from mountain-men.
A military-level attack against the third highest representative of the United States is a quite certain way to launch a war, maybe even nuclear retaliation, based on how quickly and well "prove" for attribution is unveiled.
However getting attention is a key purpose of that trip.