Here is volume no. 3 in the live a little collection of iPhone lock screen art, free to download and use. After such a rough week in our nation, we need to remember this! Enjoy.
Just grab the image from HERE link and drag to your desktop and email it to your account that you have on your iPhone. Save the image to your Camera Roll. Go to Settings > Brightness & Wallpaper > tap Lock Screen Wallpaper > place picture from your Camera Roll to your Lock screen. Done! I hope you enjoy!