Partners will be provided with a link to the PTSD Family Coach app. PTSD Family Coach provides four main intervention elements: Learn, Support, Tools for Managing Stress, and Self-Assessment. The "Learn" section of the app provides extensive, mobile-friendly information about the basics of PTSD and how to best support their loved one with PTSD, how to take care of on self while living with someone with PTSD, how to take care of relationships with children and with one's partner, and how to most effectively encourage their partner to engage in professional care. The "Support" section of the app provides information about how to get immediate crisis help (e.g., for medical emergencies, suicidal thoughts, or threats of violence), how to get help in talking with a partner about PTSD, how to find family-specific services, resources for parents and children, and resources for the Veteran. The "Tools for Managing Stress" section of the app contains interactive relaxation tools, cognitive strategies for managing stress, mindfulness exercises, encouragement to engage in pleasant activities and to engage in social activities, safety-planning tools, tips for good sleep hygiene, and grounding techniques. Finally, the "Self-Assessment" section of the app provides tools for self-monitoring stress symptoms and tracking these symptoms over time.Description of the Discussion Boards to be used in this study:All discussion boards will be privately hosted on the secure https://www.health-space.net sight maintained by the PI and can only be accessed with a unique API key and valid invitation code stored in the mobile app, so that only those who have been provided with both a research version of the study app and a valid invitation code will be able to access the discussion board. There will be 2 unique discussion boards: one for family members (i.e., accessed from the PTSD Family Coach app) and one for Veterans (i.e., accessed from the PTSD Coach app). Those who choose to post a message to the discussion board will be identified only by their invitation code (a random string of 6 characters and/or digits), and all messages will be reviewed by the investigators in order to ensure safety and appropriateness before they can be viewed by any other participants. As soon as a message is posted, an automated email will be sent to each of the investigators, who will be asked to log-in to a secure website in order to approve the submitted message so that it can viewed by other participants. Should any safety or privacy-related concerns arise, or the message is deemed inappropriate for any other reason, the participant who submitted the message will be contacted and provided with additional information necessary for either obtaining additional assistance or modifying the message to make more appropriate or private as necessary.