The security service of Ukraine will be hard to respond to possible provocations in Odessa on may day celebrations in the city has already sent a large group of office workers from the zone of special operations in the Donbass, said on Wednesday on a press-conferences the head of Department of SBU in Odessa region Sergey Batrakov. "together with the group the entire staff of management of SBU will participate in activities to counter terrorism during the holidays and opposition groups of individuals who are Rockin' the situation by registered holding of meetings, rallies, provocation