Contact Amentum - Commercial O&M Headquarters 20501 Seneca Meadows PkwySuite #300Germantown, MD 20876T: 301.944.3100 Commercial O&M Name* Company* Email* Phone*Message*CAPTCHACommentsThis field is for validation purposes and should be left unchanged. Employment Verification The Work Number 1-800-367-5690 Amentum: 14285 / Amentum DynCorp: 12922 / DYNCORP INTL Careers / Recruiting Please visit our career pages: Amentum / DynCorp Supplier Inquiries Please contact us via the Supply Chain System Ethics Hotline Amentum: 1-844-950-1964 DI: 1-877-396-4685 Facility Maintenance Services Process Improvment & Engineering Integrated Facility Management MRO Supply Chain Management Construction Support & Waste Management Contact Amentum Commerical O&M