Non-standard model signatures like long-lived particles can be very difficult to spot. And as the LHC throws away over 99% of it's (supposedly uninteresting) background data, it is super important to make sure we keep those long-lived particles, and this #CMSPaper summarises all we do to make that happen https://arxiv.org/abs/2601.17544 It has a large contribution from our group at DESY and includes work from doctoral students I supervised 👩‍🏫 🎓️