Not true metal but - Jared Gomes - (hed)pe
Corey Taylor - Slipknot / Stone sour (in a geeky kinda way)
Chad Gray - Mudvayne / Hellyeah
Jamey Jasta - Hatebreed / kingdom of sorrow / jasta
Brian Fair - Shadows Fall (I am a sucker for dreads!!)
RNP is a form of Performance-based Navigation that ensures the aircraft follows a carefully designed path that can provide navigational flexibility, such as custom-tailored, curved paths through mountainous terrain or congested airspace.