You have many choices when selecting a nurse staffing firm, but when it comes down to it, what is the ultimate decision factor? You select the agency that provides the best, most competent nurses when you need them most. We Offer Per Diem and Travel Assignments Secure Nursing Service Inc. recruits and places healthcare professionals in both per diem assignments, and in short-term and long-term travel assignments in a variety of facilities in Los Angeles and the surrounding areas. With hundreds of healthcare professionals, we lead the industry in the quality of employees available to client facilities.