Between the times of 3:24-3:27 PM PT, we saw that the laser on CO2X was turned off when we were trying to initialize CO2Y.  It's not clear exactly what caused this glitch because we had not yet started touching either system during this time frame so we're not sure if this glitch was due to a human interaction or some sort of electronics malfunction.  All we know is that the laser gate was off but that the emergency shutoff had not been pressed on either table.  Also, the laser itself was not shut off but the laser controller had somehow closed the gate.  We're still investigating this issue, we turned the laser on at 10:00 AM this morning so it had been running for about 5.5 hours or so.