Rocket Lab has been awarded a contract by NASA to provide rapid studies for the Mars Sample Return (MSR) program and the abstract is a fascinating read:

For the last five years, Rocket Lab has methodically implemented a strategy for affordable planetary science that is uniquely suited to deliver a low cost, rapid Mars Sample Return (MSR) mission. As a vertically integrated launch service provider, Rocket Lab has proven capabilities across all required launch vehicle disciplines including vehicle design, production, logistics, regulatory, and operations. Rocket Lab plans to return 30 samples (29 samples tubes and at least 1 witness tube) back to Earth to meet Decadal-class science objectives.

See the whole thing here.