Allan “Al” Colombo, SDM Contributor & Former Staff Member, Dies at 71 December 8, 2021 Colombo was a trade journalist and book author in the electronic security industry. He started freelancing for SDM in 1986, and joined the full-time staff in 1990. Read More
Joe Kelly, Industry Pioneer, Passes Due to COVID-19 Dave Engebretson November 5, 2020 Our columnist, Dave Engebretson, memorializes Joe Kelly, faithful husband, father, grandfather and industry pioneer.Read More
