Systems and methods to safely transport passengers are described. The system broadcasts over a network, to at least one forward operating base, (FOB) a request for linkage. The system is located in a vehicle that travels on land and is utilized for bidirectional communication with a first system unit type for detecting the presence of a passenger in the vehicle and a second system unit type for communicating different alert types. The first system unit type includes a first child seat control unit and the second system unit type includes at least one FOB including a first FOB. The system receives and registers the first FOB as being linked and receives an occupant present message from the first child seat. The system identifies a temperature inside the vehicle as exceeding a predetermined threshold and communicates a temperature alert message to the first FOB.