On all games that i play, i try to get all tha achievements for tha game. Ive got three left for Vegas (My Hero, True Identity, and tha ace one). Im just a little confused on tha my hero achievement, it says "save both hostages 10 times". Does this mean that you have to escort both of them at once? or is it like 10 times on one map and 10 on tha other?

If anyone could help me or give advice for this achievement, it would help alot.