Along with Roku, Apple and Google, Amazon is a major player in streaming TV devices, and the Fire TV Stick is the most popular Amazon streamer. It's small, cheap and capable, and people seem to like it.
A president pro tempore is the leader of the Senate when the Vice-President is not there. (pro tempore is Latin phrase which means for the time being.) Unlike the VP, he can also vote to create a tie, since he is a Senator. The position is elected by the Senators.
The Vice President of the United State s presides over the US Senate. He cannot vote unless there is a tie vote. But on a daily basis, this role is fulfilled by a senior senator, the President pro tempore, or his designates.