different devices, how we do it, our method for maintenance, and then also making sure we have at the ma imout. in the process, it takes about approximately 500 to 600 hours of man hour time of testing, inputting the data. it's pretty time intensive. another area where we're required to do some work is our operators in the powerhouse must be nerve certified. and of course, nerve stans again for the north american electric reliability corporation. it takes approximately 400 hours for our operators to go through the initial testing process. they go through a three month learning program that we do during work hours and then they pass a test and they become certified. once they attain the certification, there's continued training. and that is approximately of up to 168