Sometime things go according to plan. The Barcelona Job was perfectly planned and executed by The Team.
An eccentric billionaire, Desmond Rogers, with a penchant for works of art that don't belong to him contacted the team to acquire several original Picasso's from the museum dedicated to the artist. Civilian causalities were deemed "unacceptable."
Schematics for the building were obtained, security systems disabled, and the one night patrol guard incapacitated. The entire operation took two days, the actual infiltration less than five minutes. Alexi Pachirakov proved to be indispensable in providing the means of getting the works of art out of Spain.
None known, unless you count the viewing public losing several priceless works of art.