What is the first thing the Two Witnesses do?

In one sense I believe revelation the other I am not sure. If the two witnesses show up in blue jeans what will be the first thing do? John wrote it but it is written from a viewpoint of someone who has never seen technology and relates it all to angles and God pouring out wrath, when it could just be hi tech weapons or bizarre experiments back firing, like Cern causing earthquakes rather than discovering particles.

The 2 witnesses will never admit that they are the 2 witnesses. Unknown to each other at first, they will set up separate websites and post blogs and videos. Their videos will also be posted on YouTube, and become extremely popular and controversial. Many will suspect that they are the 2 witnesses.

Along with their teachings about God and the world, they will give warnings through their videos, addressed to those in power. If the powerful do not heed these warnings, God will cause their threatened punishments to occur. The goal of these warnings will be for the powerful to allow people to gain the understanding and ability to fully exercise their free will regarding which side they wish to stand on.

The witnesses will not punish evil; that is not their job. They have 2 main tasks: 1) explain the nature of God and His world, and Satan and his methods and goals. -And 2) coerce the manipulators who do not allow people to be informed and use their free will to choose either good or evil.

What is the first thing that the Two Witnesses will do?

Probably have themselves checked out by a psychiatrist to be sure that they're not suffering from a delusion.

They will have to practise first.