National Wireless Safety Alliance appoints Johnny Crawford, Vertical Bridge executive vice president-tower development; Amanda Freeman, Crown Castle director of safety-tower assets; Leticia Latino-van Splunteran, Neptuno USA CEO; and Jim Tracy, Legacy Telecommunications co-founder, to board of governors … Stratus Networks names former Skywire Networks President Darren Feder CEO ... Periphery, media workflow solutions company, names Seagate Technology’s Seth Cohen vice president-sales, Americas, and Jordan Woods and Lenny Khaitov, both ex-NetApp, senior solutions architects ... Q4, market communications platform provider, names VersaPay’s Keith Reed chief operating officer; Donna de Winter remains chief financial officer while moving her COO responsibilities to Reed ... Empower AI names former McKinsey & Co. partner Paul Harrington chief growth officer ... NBC/Telemundo names CNBC’s Sally Ramirez senior vice president-news for Chicago’s WMAQ and WSNS, newly created role, effective May 22, and promotes Akemi Harrison to news director, WMAQ.