Student or Learner
Please, check if the follwoing passage is grammatically correct. Thanks!
In light of the enormous resources invested in that mission, portraying Jason's detection as an impressive achievement is a bit much. On the other hand, one should bear in mind that tracing Jason in Takisland is as challenging as tracing a needle in a haystack. Jason was hiding in a hostile and fanatical country whose regime, and largely - whose intelligence services, externalized their sympathy for Jason's ideology. Moreover, Jason was hidden by a family loyal to "The Fifth Religion" which was generously paid.
The expression I know is "looking for a needle in a haystack." The expression for success at that would be to "find" the needle, not to "trace" it.