Complex sentence: Under the command of Director George Cristian Maior, a long-term process of reform is being implemented since the beginning of 2007, includind structural changes and a redefinition of the service's role.
Split into simpler sentences: Under the command of Director George Cristian Maior, a long term process of reform commenced implementation at the beginning of 2007. Reforms include structural changes and a redefinition of the service's role.