Kate is a physical therapist who advocates for optimal quality of life in older adults after hip fracture, with knee osteoarthritis, and/or with dementia. She is an excellent member of clinical research teams and inspires the collaborators to ground the project in current clinical reality. Kate is well trained as a clinical scientist but uses her clinical expertise to develop innovative interventions. Research designs for complex interventions are integrated into ongoing clinical practice; participating clinicians engage the projects with enthusiasm because of Kate's sincere devotion to optimize functional performance. Kate develops effective strategies to recruit and retain patients in complex and lengthy clinical trials. Who else receives thank you notes from research participants?