Mass Effect 3 currently has a Bounty Weekend event active. The event entitled Operation: Geronimo takes place from Jan 18th to Jan 20th. See the event details and rewards below.
Event Description: Reaper units are identifying and targeting our team medics. To counter, we are increasing training in battlefield medicine for all N7 soldiers, regardless of specialty. By ensuring each soldier can deliver emergency care, we will confuse and frustrate the Reapers into abandoning their strategy.
Individual Goal: Earn any first aid medal on any map at any difficulty.
Reward: Commendation Pack