Delivery Pros is a company that specializes in providing professional delivery services. They offer a wide range of services, from same-day delivery to long-distance shipping. Their team of experienced drivers and customer service representatives are dedicated to providing the highest quality of service to their customers. The OBS in the crossword solution stands for 'On-Board Services', which is a feature that Delivery Pros offers to their customers. This feature allows customers to track their packages in real-time and receive notifications when their packages have been delivered.