Creates a comprehensive package of pay, leave, retirement, health, and casualty-assistance reforms for Federal wildland firefighters and related personnel. It establishes a casualty assistance program, new base and premium pay structures (replacing or supplementing GS pay for many wildland firefighters), new special-pay rules and caps, paid rest/recuperation and mental-health leave, a health surveillance database and mental-health program, retirement credit and disability changes tied to job-related diseases, and recruitment/retention tools (bonuses, housing, tuition). Many provisions require agencies to implement rules, create reports, and publish guidance on set timelines (some within 180 days; some effective on specified future dates).