Certainly, there are some disturbing echoes of the Mogadishu raid, including a significant underestimation of the enemy's will to mobilize and fight.

But mixed in with the enthusiasm, scientists and other academics say, are disturbing echoes of the past.

Its unceasing motion dredged up disturbing echoes of the journey through time.

And in their painstaking accounts of modern-day wrongs, there rang disturbing echoes of this country's ugly history.

Three weeks later, in Far Rockaway, Queens, another incident sounded disturbing echoes.

But, sadly, the use of amplification inevitably creates some disturbing echoes and uneven vocal texture.

He studied reflection in telephone circuits (these produced disturbing echoes).

As we've seen, Hillary Clinton's past carries disturbing echoes of Nixon's.

Despite its huge size, disturbing echoes and sinister atmosphere this hall is quite harmless.

To this point, the situation had disturbing echoes reminiscent of the incident with the Hearst heiress from back in the 1970s.