National Burden - C. G. Cooper

National Burden is the fifth novel in the Corps Justice series. This book is available through kindleunlimited.

Now that Cal's cousin Travis is the new president's chief of staff, working closely with SSI is simpler. Cal is called in by President Zimmer when things get hot. What Cal and his crew discover is that foreign powers aren't the only ones trying to undermine the new president. Very highly recommended.