The reserves used to function as a strategic force. They now function as an operational force. In other words, the reserves were only called up when necessary. Now especially on the medical side reservists are being continually activated to shore up active duty for current operations. With downsizing of active duty, the reserve side will continue to be used accordingly. Army reserve healthcare provides 75% of all the healthcare to active duty; It is a safe bet that deployment will happen, and RN's are deployed for a year unless you are a CRNA.