 Exercise Siebrize 2015, the largest multinational maritime exercise in the Black Sea, began as participating and observing nations gathered together for the exercise opening ceremony. 11 nations have gathered here for the sole purpose of increasing our ability to work together with one another. Collectively we are all working together with the same aim, the regional security of the Black Sea. Air, land and naval forces from participating countries will work together both ashore and at sea to strengthen interoperability and improve maritime security. Specialist Raul Pacheco, Odessa, Ukraine.