JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="f1" name="" onclick="injure(this);">
<label for="f1">No</label>
<BR>
<input type="checkbox" id="f2" name="" onclick="injure(this);">
<label for="f2">Yes</label>
<BR>
<div id="LocFall">Show some stuff</div>

CSS

#LocFall {
    display:none;
}

JavaScript

function injure(cmb) {
    if (cmb.checked) {
        if(cmb.id==="f2")
        {   document.getElementById("LocFall").style.display = "block";
             document.getElementById("f1").checked = false;
        }
        else
        {
           document.getElementById("LocFall").style.display = "none";
            document.getElementById("f2").checked = false;
        }
    }
    else
    {
        document.getElementById("LocFall").style.display = "none";        
    }
        
}