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yea, if an energy beam can blast a warhead in mid flight then it should not be that difficult to set a forrest on fire
2015 US directed energy beam weapon

Nice one bro, I know all about them, found loads of info on Wikileaks regards to them.

will chrome-plating be the solution? to bounce the beam away

There is a much smaller solution than that, and portable too.

I spend a lot of time most winters messing with electronics, making amplifiers and such things.
https://www.techwalla.com/articles/how-to-make-a-frequency-jammer

You would need to make it variable frequency or find the exact frequency being used.

https://electronicsforu.com/electronics-projects/build-cell-phone-jammer

Parts available even on eBay.

Don't think that a batterypowered jammer can do much against a megawatt beam of directed energy.

Just emailed hollywood if they have a few of those outfits that are obsolete.. :-)

You have to upscale and think bigger my friend, match force with force, and may the force be with you Luke. :-)

Hmmm how many musk-mobile bat-erries do we need for that?