Complex sentence: Because of the harsh response, several of the pilots who originally signed the letter reneged and removed their signatures After more than 30 signed 4 later recanted one an El Al pilot was threaten with dismissal and another lost his civilian job.
Split into simpler sentences: Because of the harsh response, several of the pilots who originally signed the letter reneged and removed their signatures; after more than 30 signed, four later recanted. One, an El Al pilot, was threaten with dismissal and another lost his civilian job.