Because the mature tissue of velvetleaf contains lots of secondary metabolites such as alkaloid and phenolic, it is difficult to obtain high purity DNA from mature tissue of velvetleaf.
With fewer resources and opportunities, it's likely they've experienced more hardship in their lives than the vacationers, so maybe they're more deserving of rescue?
I believe coaches today are having a little more trouble getting players to accept roles today, and that makes it a little more difficult, but those did.
The FlyCroTug still has room for improvement - it's 5 minute flight time limits the robots to only short-range operations and more difficult, multi-step tasks require more than one FlyCroTug.
Believe me, I make this request with good reason, for I might otherwise excite hopes destined never to be realised, and only increase difficulties and disappointments already quite numerous enough.