I searched around while I was still invisible to see how many more of them were in the area.
Then, the realization kicked in.
Me scanning the perimeters while engaged in stealth mode was wearing on me.
I saw my own hand become visible with the rest of my body slowly following:
Oh, crap. I was wasteful in using my stealth mode.
Then, I heard the rest of them coming straight for me.
I felt like the biggest idiot after being careless with my powers.