Find a recording of Dexter Holland singing Half-Truism (or just remember it). Notice that the tessitura of the vocal line is screaming high the entire song. I'd have to listen to it again to be sure, but I remember a range of at least d'-c''.
One source claims that Dexter Holland's range is G-d'', but this particular song is obviously all in the highest octave (roughly) of that range. (The same source also claims he is a "low tenor," which I don't believe quite matches the range given.) Yet, it sounds intense without sounding forced, and it certainly doesn't sound like falsetto to me.
How does a male singer accomplish this? I know recordings can be done in stages, but for a live performance, how does a singer pull that off and still have a voice left?