Wanda realized that it couldn't possibly be a good morning after the bedroom floor buckled. The insistent alert to assemble the Avengers confirmed her suspicions. Donning her costume, Wanda tried to teleport to the floor below, an attempt which only rendered her annoyingly invisible. Taking the scenic route down the staircase, she joined the other two Avengers in the common room, a disembodied voice somewhere near Cap's shoulder answering Jess' question with the word, "Outside."
The coordinates given by the alert pinpointed the location of a very angry man, as tall as the tower, visible through the windows. Since the giant man appeared to be making his way closer to the tower for a further assault, it was probably a good bet that he was the reason for both the shaking of the building and the alert of danger. This was already shaping up to be a wonderful day.
Erring on the side of caution Wanda pushed out an invisible force field- one of the few aspects of Invisible woman's powers that came naturally to her- around the windows of the room where the trio stood. It could give them a little time the plan while their giant adversary tried to punch another hole.