Americans are mourning the loss of four Marines in Chattanooga, Tenn., through touching makeshift memorials and prayer.

Marine Corps Gunnery Sgt. Thomas Sullivan Lance Cpl. Skip Wells, Sgt. Carson Holmquist, and Staff Sgt. David Wyatt were killed in yesterday's attacks on two military facilities.

Police say 24-year-old Mohammad Youssuf Abdulazeez gunned down the four men before he was killed by police.

See some of the emotional photos below.


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Michael Dexter sings "Amazing Grace" by a makeshift memorial outside the Armed Forces Career Center on Friday, July 17, 2015, in Chattanooga, Tenn. (AP Photo/Mark Zaleski)
Bill Lettmkuhl kneels by a makeshift memorial in front of near the Armed Forces Career Center on Friday, July 17, 2015, in Chattanooga, Tenn. (AP Photo/Mark Zaleski)
A woman places a sign at a make-shift memorial outside a military recruiting center on Friday, July 17, 2015, in Chattanooga, Tenn. (AP Photo/John Bazemore)
A U.S. Navy veteran, who did not wish to be identified, places an item on a makeshift memorial outside a military recruiting center on Friday, July 17, 2015, in Chattanooga, Tenn. (AP Photo/John Bazemore)
Chuck Hartung holds his daughter Haley, 8, during a prayer service at Wesley Memorial United Methodist Church for the victims of shootings at a recruiting center and U.S. military site a few miles apart in Chattanooga, Tenn. (AP Photo/John Bazemore)
A woman holds a candle during a prayer service at Wesley Memorial United Methodist Church for the victims of shootings at a recruiting center and U.S. military site a few miles apart in Chattanooga, Tenn., Thursday, July 16, 2015. (AP Photo/John Bazemore)
A couple comforts each other by a makeshift memorial outside the Armed Forces Career Center on Friday, July 17, 2015, in Chattanooga, Tenn. (AP Photo/Mark Zaleski)