Other: There needs to be a high voltage sign and a padlock on the tennis court door that opens into the solar panel fenced area at the Winslow Sports Complex. Today around 1pm, a couple of tennis players had their dogs on the court (which is against the policy indicated on the sign), and the dogs got out into the high voltage area from the tennis court, which could have been dangerous. I didn't see whether the owners let them out or the dogs let themselves into the area, but the owners weren't quick to go get the dogs and let them roam the area. The other gates in the solar panel area were padlocked and have high voltage signs, but this door does not. To prevent future incidents, I wanted to report this hazardous issue. Thank you.