[lemma=□] □ □
[lemma=from] □ □
[lemma=stationary] □ □
A source owner or operator may elect to accept federally enforceable permit terms and conditions which restrict or cap emissions from a stationary source or emission unit in order to avoid being subject to one or more applicable requirements that the source or unit would otherwise be subject to , or where needed to establish an emission reduction credit as defined under Part 231 of this Title . Accordingly , during the spring of 1944 , he supervised a major sea test in which USS Buckley ( DE-51 ) steamed outward from a stationary receiving ship , periodically dropping small explosive charges fused for various depths . It provides soldiers a means of engaging targets from a stationary position without direct exposure to hostile fire .