There are 2 leves per company you can only get once you are Sergeant Third Class. The main difference with these leves is that although the time given is 20 minutes, unlike all the other leves you have a set objective and are not stuck in the leve for the full duration. On average this leve takes about 5 minutes to complete for same, so is much more efficient for spamming for seals.
You can accept and then abandon other leve quests to try and cycle through to these 2 higher ranked leves but it will still cost you 1 leve allowance to do so.
Hello Kira Hime.
Where do you get those leves? I always try the level40 ones at Camp Bald Knoll... and I'm always stuck the whole 15mins. I would love to try those ones out. Thank you.