Mornings | Reporting | ShopTalk KVOA Shuffles Reporters on Morning Newscast By Merrill Knox on Mar. 20, 2012 - 11:06 AM Tucson NBC-affiliate KVOA is making talent changes to the station’s morning newscast. Starting Monday, Samantha Ptashkin (pictured) will cover breaking news for the newscast, according to TVNewsCheck. Ptashkin joined the sta ...