When the Avengers got to the location that they thought Arnim Zola and Red Skull were, they found no sign of the HYDRA members. They did however find a note. It was carved into the wall and filled with oil. The oil was ablaze, so it gave the illusion that the note itself, was written in fire. It read,
THE SLEEPERS HAVE AWOKEN! HH!

TO BE CONTINUED

Just kidding...you're welcome for no cliffhangers😊