There are tons of places I don't know how to make it sound like the present. Here's a sample.
My nerves continued to grow at full throttle. Every step me and my team would make from here on out would affect the future of everyone. Along the hallway there was a door left ajar, with a light seeping through. I went first, peeking through the door. A gun shoot barely missed my head as I ducked back. I turned my own gun off safety and fired back. Suddenly, bright flash erupts from the room beyond. “NO!”, I yelled, “GET DOWN!” My team went diving to the floor just in time, but I was too late. I was blown back, and as I faded away my last thought was, "I failed."
See how some this seems like some happens in the past and some in the present! What do I do?