What should be installed before crawling underneath the JLTV?

Before crawling underneath the Joint Light Tactical Vehicle (JLTV), it is essential to install suspension lock out braces. These braces are critical for ensuring safety by preventing the suspension from moving while personnel are working under the vehicle. The JLTV's suspension system is designed to absorb shocks and impacts, which could pose risks to anyone underneath if the vehicle shifts unexpectedly. By using suspension lock out braces, workers can mitigate the risk of the vehicle's weight shifting or the suspension compressing unexpectedly, thus creating a safer working environment.

Other safety measures may have their importance but do not specifically address the risks associated with working under the vehicle in the same way that suspension lock out braces do. For instance, while wheel chocks prevent the vehicle from rolling and engine shut-off keys ensure the vehicle is not inadvertently started, they do not secure the suspension itself. Safety goggles offer protection to the eyes but do not address the underlying safety concerns associated with the vehicle's movement. Therefore, the installation of suspension lock out braces is the most critical step before proceeding to crawl underneath the JLTV.