What must EMS personnel ensure before removing axial spinal immobilization devices?

The correct choice focuses on ensuring that the patient does not meet any indicators for non-steroidal anti-inflammatory drugs (NSAIDs) before removing axial spinal immobilization devices. This is vital because patients who might require NSAIDs due to contraindications should not have spinal immobilization removed until their condition is further evaluated.

In emergency medical situations, it is crucial to assess whether the patient has any contraindications to NSAIDs, which can include a risk of bleeding or other complications from certain conditions. If a patient is at risk, removing spinal immobilization could exacerbate their condition. Therefore, understanding the implications of NSAID contraindications directly relates to patient safety and the proper procedures that EMS personnel must follow.

Other options may seem relevant but do not encompass the holistic assessment required to ensure patient safety concerning NSAID indicators. It's not solely about the patient's alertness or overall stability or waiting for medical control; rather, it hinges primarily on understanding any contraindications to medications that might affect treatment decisions regarding spinal care.