  We advocate for the realization of volatile sample return from various
destinations including: small bodies, the Moon, Mars, ocean worlds/satellites,
and plumes. As part of recent mission studies (e.g., Comet Astrobiology
Exploration SAmple Return (CAESAR) and Mars Sample Return), new concepts,
technologies, and protocols have been considered for specific environments and
cost. Here we provide a plan for volatile sample collection and identify the
associated challenges with the environment, transit/storage, Earth re-entry,
and curation. Laboratory and theoretical simulations are proposed to verify
sample integrity during each mission phase. Sample collection mechanisms are
evaluated for a given environment with consideration for alteration. Transport
and curation are essential for sample return to maximize the science investment
and ensure pristine samples for analysis upon return and after years of
preservation. All aspects of a volatile sample return mission are driven by the
science motivation: isotope fractionation, noble gases, organics and prebiotic
species; plus planetary protection considerations for collection and for the
sample.
  The science value of sample return missions has been clearly demonstrated by
previous sample return programs and missions.
  Sample return of volatile material is key to understanding (exo)planet
formation, evolution, and habitability.
  Returning planetary volatiles poses unique and potentially severe technical
challenges. These include preventing changes to samples between (and including)
collection and analyses, and meeting planetary protection requirements.
