  It is proved that the two-sided exits of a Levy process are proper, i.e. not
a.s. equal to their one-sided counterparts, if and only if said process is not
a subordinator or the negative of a subordinator. Furthermore, Levy processes
are characterized, for which the supports of the first exit times from bounded
annuli, simultaneously on each of the two events corresponding to exit at the
lower and the upper boundary, respectively are unbounded, contain $0$, are
equal to $[0,\infty)$.
