Both X and Y green are aligned such that the arm beams hit the broadband PD. Also, the 4th port of the combining BS for each arm was used to put a camera and DC PD for each arm. So, ALS-TRX and ALS-TRY are both active right now. The camera currently labeled "GRNT" is the Ygreen transmission. I have a camera installed for Xgreen transmission, but I have not run a cable to the video matrix. For now, to speed things up, I'll just use the GRNT cable and move it back and forth between the cameras.