Mobile crane setup - GIF

Mobile crane setup.

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Previously:

<div style="display:inline-block; white-space:normal;"><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1664979979_hyundai_10k_crane_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">10,000-ton shear-leg floating crane</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17735406934133885.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Boom crane grapple saw</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1641607247_crane_drops_antenna_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Crane drops antenna tower section</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1648677805_energized_crane_power_line_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Crane hits power line</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1604615418_crane_lifting_billboard_collapses_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Crane lifting billboard topples over</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1606337892_crane_lifting_crane_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Crane lifts crane lifting crane</span></span></div>

Why did they take the boom off? Weight restrictions?

Also that's a pretty neat rig for swapping the boom. I've never seen that before.