Three Alexandria communications firms are merging. PCI Communications, LeapFrog Solutions and Carousel30 will begin operating Thursday as Yes& - pronounced "Yes and" - to broaden their client services, according to Robert Sprague, owner and co-founder of PCI. He declined to disclose terms or the combined revenue, but LeapFrog and Carousel reported $6.62 million and $2 million, respectively, in revenue in 2016. Sprague, who has led PCI as president and CEO, will hold the same roles at...