The Two Witnesses are Elijah and Enoch, who never died and are alive today by virtue of contact with the Tree of Life (which was never destroyed) and who will return to public ministry at the time of the Antichrist.

The 144,000 is a figurative term meant to represent those in union with the successors of the Apostles and the Vicar of Christ.

The only Rapture will be at the Second Coming of Christ.

By the way, the Catholic Church wrote the Bible and Protestants are simply confused, heretical Catholics.

:lookie here: