Secure is related to Fixed. Fixed is a synonym of Still. Still is the opposite of Movement. Movement is related to Body. 
Military is related to Transport. Transport is related to Express. Express is related to American. American is related to Liberty. 
Secure <--RelatedTo--> Fixed <--Synonym--> Still <--Antonym--> Movement <--RelatedTo--> Body 
Military <--RelatedTo--> Transport <--RelatedTo--> Express <--RelatedTo--> American <--RelatedTo--> Liberty 