Not sure how that would work. "Citation one-three-niner-delta-uniform, Denver Tower, adjust altitude to seven three hundred, bearing one zero five." "Citatio

Not sure how that would work. "Citation one-three-niner-delta-uniform, Denver Tower, adjust altitude to seven three hundred, bearing one zero five." "Citation one-three-niner-delta-uniform, Denver Tower, please respond." Also FYI it's not like anyone can actually be asleep because pilot is required to establish two-way ATC contact to enter the airspace.