try {
document.getElementById('thisdayinhistory').innerHTML = '<strong>April 28, 1919</strong>: Leslie Irvin completes the first free-fall parachute jump over McCook Field, Dayton, OH, to prove that one will not lose consciousness during a delayed free-fall.  He used a manually operated parachute. ';} catch (err) {
   console.error(err);
}