Uncertainty and Firearms: Obtaining Secure Storage

The goal of this clinical trial is to test whether inclusion of cognitive behavioral therapy (CBT) for Uncertainty-Enhanced (CUE) with Lethal Means Counseling (LMC) is acceptable, feasible, and efficacious in addressing secure firearm storage and associated psychological constructs in active duty servicemembers. The clinical trial aims to: * Assess the preliminary efficacy of a LMC intervention, augmented with CUE, on firearm storage practices * Examine mechanisms through which CUE and LMC increase firearm storage practices * Assess credibility and acceptability of LMC Participants will complete: * One baseline visit * Two intervention sessions-CUE and LMC * Six brief surveys per day for 28 days using a mobile application * One mid-point survey and five follow-up surveys

Inclusion Criteria: * are currently serving in any Branch or Component of the U.S. military, or were discharged from the U.S. military within the past 90 days * 18 years or older * Intolerance of uncertainty scale-12 total score equal to or greater than 35 (i.e., one SD above the community mean) * own at least one firearm located in their home or vehicle that is stored unlocked and loaded (i.e., not secure storage) * are able to speak and understand the English language Exclusion Criteria: * do not pass the Informed Decision Making Capacity (IDMC) screener, suggesting severe cognitive impairment * have a psychiatric or medical condition that would prevent them from providing informed consent or from participating in the treatments (e.g., psychosis, mania, acute intoxication) * no or limited access to an Android or Apple smartphone that is compatible with the EMA application