Building the Retaining Wall????

Is it possible the builder is finally starting on the retaining wall behind my house? I've looked at dirt clumps and dead roots since I moved in. It's hard to believe that progress is being made.

I left the house yesterday because the noise was just horrendous and the workers cut my cable line. No TV and all that noise.....no way! Today I see rocks, blocks and workers. What could it be but the retaining wall? I'm a little worried about the backhoe driver. He speeds so fast behind my house to the staging area in the side yard. I keep thinking he's going to clip the side of my patio. I'm sure they're professionals (fingers crossed).