I've been playing trumpet for nearly eight years and, although I don't have my horn handy to try those lines, I can soudly say that playing sixteenth note ocatave jumps at 120 in semitone intervals is no easy endeavor. The second part would definately be more difficult since the register is much lower. I might be able to play the first part if I worked at it for a while, but it would be some time before it would be really clean. The second part is almost always to going to sound really muddy at that tempo, but like I said, there are some really amazing trumpet players that can do it. If you can, then much respect to you, not easy to play.