PN; 3 points:
1. If you get points for having risk that you won't have anywhere to land, then Naval sorties get them by the bucket load, as at land-on the airfield is never where you left it!
2. Since when have opposed landings been "good chance of getting in & out" (to paraphrase)?
3. In saying that the Vulcan had risk of not achieving a safe landing at home base, then it is more daring than a one way mission (e.g. Chile)......... I think not!