But it must be remembered that character bios have referred to this character as having joined the USAF after not having enough money to go to med school - I would thus assume she's fairly young and is on her first career.
The problem is the use of the word 'medic' - that's a very specific role. One which is not carried out by officers. I could quite easily see her being an inexperienced Doctor, despite having completed her medical training - but an inexperienced medic? No.