Course Enrollment The following Maritime Defense Strategy security courses are currently available for enrollment.If they do not meet your needs, please complete our training request form. Please register your intent to attend by completing the form below. Questions? Need More Info? Talk with Mark or Joseph! Give us a call or drop us an email here. Please leave this field emptyDive In! For our Weekly Security Brief, subscribe to MDSI's newsletter. Email Address * No spam. Unsubscribe at any time. Thank you. Please check your inbox or spam folder to confirm your subscription.