As of Feb.28, 2014, Ukrainian Military HQ in Sevastopol is blocked by people in uniform.
Ukrainian Frontier Forces in Balaсlava are blocked by armed people in uniform (watch from 3:08)
Balaсlava Bay is blocked by Russian Navy (watch from 5:10)
Belbeck Airport is blocked by unidentified military troops (watch from 6:30)
With credits to Вiйськове телебачення Украiни
Original video is available at http://youtu.be/AE6IyfkTGUQ